not necessarily true. It all depends on what catback he has on the car. The GSR header is shorter, but a GSR catback itself is longer to make up for it. If the catback on the car is a type R or LS/GS catback, use a type R header. If the catback is for a GSR, use the GSR header. Also, the stock catback on a 94-99 GSR is different than the 00-01. The 00-01 catback is the same length as the type R. Since the car is a LS with a B18C1 swap, just use a type R header or a LS header.Originally Posted by bRiAnMcIvIcS
Just make sure you don't waste money on a DC or skunk2 header. They fvcking blow. At the minimum get a jdm 2.5" collector jdm type R header. For the best bang for your buck, Email Mr. Kidd and ask him about one of his hytech replica headers. Seriously, don't waste your money on a DC or skunk2 header. You may pick up 2-3 whp with one of those. Mr. Kidd's headers are under $300 shipped and have been proven to make like 10whp more than the DC 4-1 jdm style header.
here's a link to Mr. Kidd's headers. He can tell you exactly what you need. He is pretty much an expert on B series setups, and held (or may still hold) the N/A B series whp record for GA.
http://www.importatlanta.com/forums/...d.php?t=171361