# Mustang guys...need help
**URL:** https://forums.speedlife.net/t/mustang-guys-need-help/187721
**Category:** PittSpeed Automotive
**Created:** [January 29, 2007, 8:24pm UTC](https://forums.speedlife.net/t/mustang-guys-need-help/187721 "2007-01-29T20:24:53Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Orr89rocz](https://forums.speedlife.net/u/Orr89rocz)
#### Post date: [January 29, 2007, 8:24pm UTC](https://forums.speedlife.net/t/mustang-guys-need-help/187721/1 "2007-01-29T20:24:53Z")
I have a friend who owns a manual 99 GT. He has a stock clutch and wants to replace it but he says there is a problem
apparently he says stangs came with two size flywheels, a smaller one and a larger one. he has the smaller one and the clutch is for the larger one. But there are also 6 bolt cranks and 8 bolt cranks and he doesnt know which one he has, and i guess that makes a difference
Any input on what crank he has?
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### Author:  [@GOT\_SVT](https://forums.speedlife.net/u/GOT_SVT)
#### Post date: [January 30, 2007, 10:56am UTC](https://forums.speedlife.net/t/mustang-guys-need-help/187721/2 "2007-01-30T10:56:49Z")
> [@Any one work for Toyota?](https://forums.speedlife.net/t/any-one-work-for-toyota/27601/4):
>
> I have a friend who owns a manual 99 GT. He has a stock clutch and wants to replace it but he says there is a problem
>
> apparently he says stangs came with two size flywheels, a smaller one and a larger one. he has the smaller one and the clutch is for the larger one. But there are also 6 bolt cranks and 8 bolt cranks and he doesnt know which one he has, and i guess that makes a difference
>
> Any input on what crank he has?
well the clutch should be the same on both
if they are getting a new flywheel they need to figure out where the engine was built.
6 bolt = romeo
8 bolt = windsor
hope this helps