alright, i have a type r motor and plan on leaving it stock. but it isnt even in an integra, its in a civic. but the issue im having right now, is what header to buy... i wanna buy a cheap ebay 4-1 header but i cant find any for an itr, just for a gsr. the reason i wanna use a cheap header at first is cuz im not sure a 4-1 header will work in my car, i'm gonna use the cheap header to test fit. the rest of the exhuast is custom, so does it matter whether i use a header from a gs-r or itr? will there be an issue in clearance from the oil pan, etc on the type r? or is it just the lengths that make them different part numbers?

 

find something with a 2.5" collector. do NOT buy the ebay special for $200 bucks. Crappy welds, trust me

 

well the issue was that i dont know if it will fit or not. i want to know if it will fit, but i dont wanna buy an expensive header that doesnt fit.

 

You can always make it fit. All B18 and B20 exhaust manifolds will clear the oil pan, the only difference will be the length of the collector due to cat location.

 

buy a custom header and get it over with. You wont have to buy another header ever again.