help w/turbo extinsion, downpipe & cat

[jdmben]

ok heres the deal im getting a hks gt spec exhaust but its 3.74 inches in diameter the biggest downpipe ive seen is only 3", same as a cat(test pipe) and i know trust has a turbo extinsion that connects to the downpipe but i think thats only 3" also. my question is are there any turbo extinsions, downpipes, and test pipes bigger than 3 inches. if not, is getting the hks gt spec worth it or should i just get a smaller 3" exhaust. please help me out somebody thanks ben

[I H8 UR DSM]

u can use the 3" downpipe and either use a cat w/ a 3" flange on one side, and a larger flange on the other side...or a straight pipe, use a 3" flange on one side, and just weld it onto the ex. on the other side.

[jdmben]

uh thanks for the reply.... but my question was is there bigger than 3" downpipes cats and turbo extensions

[I H8 UR DSM]

its more predominant, and a lot easier, and more cost effective to go the custom route when it comes to that. Yes companies do make them in japan...but the search, time, and shipping your going to put into it wouldnt be worth it for those parts, id just go to a muffler shop, and have them custom make u everything you need...I have a N1 which is larger than 3", and i have the downpipe bolted to a straight pipe on that end, and welded to the N1 piping. Custom is the way to go in that situation.