# Looking to buy a Subaru 2.5 RS; help needed
**URL:** https://forums.speedlife.net/t/looking-to-buy-a-subaru-2-5-rs-help-needed/161712
**Category:** NYSpeed Automotive
**Created:** [October 20, 2010, 7:39am UTC](https://forums.speedlife.net/t/looking-to-buy-a-subaru-2-5-rs-help-needed/161712 "2010-10-20T07:39:06Z")
**Posts on this page:** 11
**Page:** 1
### Author:  [@Mike93](https://forums.speedlife.net/u/Mike93)
#### Post date: [October 20, 2010, 7:39am UTC](https://forums.speedlife.net/t/looking-to-buy-a-subaru-2-5-rs-help-needed/161712/1 "2010-10-20T07:39:06Z")
I’ve come across a nice little '99 2.5 RS that I’d like to pick up. It needs a rear diff according to the current owner (friend from work). Knowing next to nothing of the Subie scene, I’m looking for forums, vendors, etc. to help me in my search for info and parts.
If anyone has a rear diff their looking to sell let me know!
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### Author:  [@copperlegend](https://forums.speedlife.net/u/copperlegend)
#### Post date: [October 20, 2010, 7:59am UTC](https://forums.speedlife.net/t/looking-to-buy-a-subaru-2-5-rs-help-needed/161712/2 "2010-10-20T07:59:47Z")
[rs25.com](http://rs25.com)
[buffaloscooby.com](http://buffaloscooby.com)
[nasioc.com](http://nasioc.com)
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### Author:  [@N\_CTRL](https://forums.speedlife.net/u/N_CTRL)
#### Post date: [October 20, 2010, 9:14am UTC](https://forums.speedlife.net/t/looking-to-buy-a-subaru-2-5-rs-help-needed/161712/3 "2010-10-20T09:14:27Z")
What are your plans for the car?
Here’s a rundown of what you’re getting yourself into by buying a '99;
-First year of the SOHC engine
-Only year the SOHC used a MAP sensor (the sensors are known to be problematic so be prepared to replace them)
-Had an open rear diff from the factory so here’s your shot to put an LSD in it. Try to find an R160 with the same FD.
That’s basically it. There are a few more things you’ll learn like colors and wheels but overall it’s a good car.
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### Author:  [@Mike93](https://forums.speedlife.net/u/Mike93)
#### Post date: [October 20, 2010, 11:50am UTC](https://forums.speedlife.net/t/looking-to-buy-a-subaru-2-5-rs-help-needed/161712/4 "2010-10-20T11:50:01Z")
> [@N'CTRL](#):
>
> What are your plans for the car?
>
> Here’s a rundown of what you’re getting yourself into by buying a '99;
> -First year of the SOHC engine
> -Only year the SOHC used a MAP sensor (the sensors are known to be problematic so be prepared to replace them)
> -Had an open rear diff from the factory so here’s your shot to put an LSD in it. Try to find an R160 with the same FD.
>
> That’s basically it. There are a few more things you’ll learn like colors and wheels but overall it’s a good car.
Plans foir the car? The most basic would be to drive it daily through the winter, enjoying the beauty of awd. I don’t have any visions of ‘building it’ as i haven’t even driven the car to even know how these things feel and/or what more I’d want out of it.
Thanks for the links Copper…and thanks for the info N’Crtl
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### Author:  [@Motocrossx23](https://forums.speedlife.net/u/Motocrossx23)
#### Post date: [October 20, 2010, 1:04pm UTC](https://forums.speedlife.net/t/looking-to-buy-a-subaru-2-5-rs-help-needed/161712/5 "2010-10-20T13:04:55Z")
Please buy a full exhaust.
I love scooby’s so much.
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### Author:  [@Mike93](https://forums.speedlife.net/u/Mike93)
#### Post date: [October 20, 2010, 1:09pm UTC](https://forums.speedlife.net/t/looking-to-buy-a-subaru-2-5-rs-help-needed/161712/6 "2010-10-20T13:09:05Z")
These cars are really slow, right?
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### Author:  [@Motocrossx23](https://forums.speedlife.net/u/Motocrossx23)
#### Post date: [October 20, 2010, 1:16pm UTC](https://forums.speedlife.net/t/looking-to-buy-a-subaru-2-5-rs-help-needed/161712/7 "2010-10-20T13:16:12Z")
Slow in a straight line, somewhat. But quick in snow, dirt, lava, dead babies…etc.
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### Author:  [@dawn](https://forums.speedlife.net/u/dawn)
#### Post date: [October 20, 2010, 1:52pm UTC](https://forums.speedlife.net/t/looking-to-buy-a-subaru-2-5-rs-help-needed/161712/8 "2010-10-20T13:52:24Z")
They’re fucking slow. Don’t let anyone tell you otherwise.
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### Author:  [@Inn-Tune](https://forums.speedlife.net/u/Inn-Tune)
#### Post date: [October 20, 2010, 2:03pm UTC](https://forums.speedlife.net/t/looking-to-buy-a-subaru-2-5-rs-help-needed/161712/9 "2010-10-20T14:03:00Z")
The rear differentials don’t go bad on stock 2.5RS’s unless the fluid was never changed since the car was new or something. I’d investigate that. If you want a shop familiar with Subarus to go over the car before you buy it just let us know.
> [@Mike93](#):
>
> These cars are really slow, right?
They run 16s stock but if you decide you want it to run 9s or anywhere in between just let us know. 🙂
And AWD is a lot more “beautiful” in the snow with a rear LSD. Swapping in a viscous rear LSD assembly from another Subaru would be a big upgrade. I don’t have any to spare at the moment.
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### Author:  [@Mike93](https://forums.speedlife.net/u/Mike93)
#### Post date: [October 20, 2010, 2:09pm UTC](https://forums.speedlife.net/t/looking-to-buy-a-subaru-2-5-rs-help-needed/161712/10 "2010-10-20T14:09:50Z")
^Mike, I’ll def keep you guys in mind should the need ever arise. The “diff needs to be replaced” was a comment made by his mechanic., so who know just what that means. Obv. not having the car in my possesion makes this difficult…but my initial queery in this post was where to look to gain information on these. I hope to connect with him tomorrow and take a better look at the thing and get more detailed info on what it needs.
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### Author:  [@Geoff](https://forums.speedlife.net/u/Geoff)
#### Post date: [October 20, 2010, 2:17pm UTC](https://forums.speedlife.net/t/looking-to-buy-a-subaru-2-5-rs-help-needed/161712/11 "2010-10-20T14:17:14Z")
> [@Inn-Tune](#):
>
> Swapping in a viscous rear LSD assembly from another Subaru
ding ding ding ding! :tup: