When i went with my son to the INDY swapmeet/trade show in March, i picked up some Magnaflow mufflers and a X pipe. My son talked me into 3"(also thats all they had). Now..in my 72 Gremlin with a 401,Hooker Super Comp headers(1 3/4" primary,3" collectors), bored .040=409,9.6/1 compression,INDY heads(if the deal get straightened out),RPM air-gap intake,healthy hydraulic cam,2500 stall in a 727 OR 904(not sure which to use yetyet)3.70 rear gear. Will that be too large diameter pipe...full exhaust all the way out the back? I don't want to defeat the purpose of my large exhaust by using too large and hurting the scavenging affect!I may be able to swap them for 2 1/2" when they make up my dual exhaust after i get the 401 installed.Thanks,Joe ------------------------ Yahoo! Groups Sponsor --------------------~--> In low income neighborhoods, 84% do not own computers. At Network for Good, help bridge the Digital Divide! http://us.click.yahoo.com/B9pRWD/3MnJAA/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/