H pipe
<small>[ November 30, 2002, 06:44 PM: Message edited by: WILWAXU ]</small>
I would go with 2.5" pipe for a stock car...3" with a cam or more...LS1s seem to like the 3" pipe, but you would be sacrificing ground clearance for 1-2 rwhp on a stock car. That's not worth it IMO.
The x-pipe will make much better low end torque and a little better top end hp than the h-pipe.
The only reason to go with the h-pipe is if you just like the sound that much better.





