Originally Posted by mobius
Was just gonna use the ITR header that came with (CTR prolly would work better). I'm not sure, but i think that stuff doesn't all bolt up exactly right. Might have to make a custom flange into the cat on either the exhaust or header. Am I right?
You can't use a B16 (CTR) header on a B18 block. The header isn't tall enough to wrap around the block.
