exhaust is a science of its own hotrod or carcraft did a test on systems not to long ago, i have 2 1/2 on my 13-1 360 and it has flowmasters with duals out the back with 5.0 mustang tips, i have seen many go with the big pipes but in most cases it is not needed, a good friend has a street truck that makes 1200 hp on the chassie dyno it makes more power with a 4 inch system than open headers and gos slower at the track with out the exhaust figure that one out? a good custom bent 2 1/2 sytem with the right mufflers will work great and sound good to and will not rob you of any power. ------------------------ Yahoo! Groups Sponsor --------------------~--> What would our lives be like without music, dance, and theater? Donate or volunteer in the arts today at Network for Good! http://us.click.yahoo.com/2xaSZB/SOnJAA/Y3ZIAA/YtqqlB/TM --------------------------------------------------------------------~-> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/BaadAssGremlins/ <*> To unsubscribe from this group, send an email to: BaadAssGremlins-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/