Whats going on i just ordered a dc jdm itr header for my gs-r and was wondering if it would fit the skunk2 mega power exhaust??? the header comes with a 2.5" collector. and the exhaust comes with 2.5" piping as well. or do i have to get a 2.5" carsound cat also??/ thanks again guys

 

if you want everything to bolt up then you'll want to buy a 2.5 cat and bring it to a muffler shop so they can make it fit or an adjustable test pipe aka omni.

 

so i have to buy a cat also?????? wont itfit just like that???

 

what year gsr? 00-01 will bolt up. 94-99 will not, and you will need what they said.