hi flow cat.

new exhaust, running a 2.5" straight pipe to the factory y-split from a hi flow cat, and dual flowmaster 40 series mufflers. Got everything except for the cat. just wondering if anyone had ne suggestions as far as which cat. i should go with.

Try a Carsound cat made by Magnaflow and they have them @ Ebay....~Larry~

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=7917484423&category=33629

^^ I agree

what is the stock diameter on the down pipe? because with the rt downpipe and cat, it is i think 3 in. and my local exaust shop could make one up for me if i got a high flow cat right? and also what is the best diameter to go with, i have a 2.5 in stright pipe, so would i be able to get away with a 3in down pipe and 3 in cat? and what am i looking at for gains?