I came across this site and thought you guys might find it interesting. It’s a bunch of sound clips with cars using Fujitsubo exhausts.
Real Player is needed to listen to them.
http://www.fujitsubo.co.jp/mc-prod/sdra-v.php3
The last clip (43 Ending N1 BCNR33)is by far the best sounding car I have ever heard.
listening to the s15 silvia versus the z33 fairlady Z, there is a big difference on how fast the Z revs… very nice
love that site. had it in my favourites for a couple of years now. 
Have you ever heard a VR6 with a good exhaust system?
Sounds almost the same, compleate bliss
Theres something about a Boxer engine that just kills me :naughty:
Damn right. Low centre of gravity and a beautiful rumble.