If I am just doing a swap in a Civic, for example, could I use an LS header instead of a GSR header? I can just get the exhaust fabbed from the header back, but is there a difference in the bolt pattern? Will the LS header not clear the B18C's oil pan?

 

it will bolt up and clear fine. the only problem you may have is the cat flange.

 

b18b header is longer than the 94-99 b18c1 header because the b18c1 catback is longer . Where it bolts to the head is the same . Only difference is length which can easily be fixed

 

thanks guys
it'll be cheaper to buy an LS header for a budget side project buildup for a car i'm going to run in autox.