Originally posted by LT6916
uh...i think there's some confusion:
ITR INTAKE manifold won't bolt up to an LS head. However, an ITR EXHAUST manifold will bolt up. The ports are the same size, however, the location of the collector/cat. will be different - so you'll need to extend/shorten you exhaust piping.
Gotcha. I was thinking of the ITR header like you said.