i have a 00 4 door gsr with a dc 421 ss header and greddy sp catback what carsound cat do i need to get to bolt on,with flanges,Keep in minds its a 4 door.

 

i don think carsouns cats have flanges. you would have to take it to amuffler shop and have them weld flanges on. i think a lot of people would recomend dave (i think) at smsp ill be going to him when i get money

 

im assuming you're talking about ktellers page....get the 2.25" and have him weld the flanges on for you ( i think the option is +$65)

 

what is kteller page, and how do i contact dave at smsp

 

type in smsp on the member list.

 

his website is http://www.kteller.com
pm his user name kteller8 here on ht

he can get you the carsound cat and weld the flanges on for you