ok so i have hooker shortie headers on now and up until now i planned on getting this y pipe

http://www.summitracing.com/parts/HOK-16767HKR/

i just looked at it again and saw that the outlet diameter is 2.5"

i was hoping of having 3" from headers to tail pipe.

would this cause much of a difference opposed to a 3" y pipe?
or should i just get it, then after the cat have 3" to the back.

or are there y pipes that i can get that are 3" all the way to the outlet? if so where can i get one.

 

3 inch y pipe is to big for 95% of the applications. A good 2.5 inch y pipe will flow more than enough for your 305. I have a 2.5 inch y pipe and I make 476 hp

 

You should ask dyno don he sells his y pipe for $200 and its stainless steel i believe

 

well i plan on putting a new engine in in the future as well. but i suppose that answers it ^.^


(idk how to double quote)
and to JR350TPI - =O man the one i listed is 240 + shipping!

is that his actual username?

 

i don't know his actual name but you could find him in the southern california section