Install unsuccessful. Checking for fit prior to connecting the two manifolds, the intake alone lined up nicely with the head ports with rings inserted. After combining the intake and exhaust lousily the exhaust seemed to prevent the intake from seating properly. The intake is an official GM part but the exhaust is not. The exhaust did seat but the intake just didn't line up causing it not to seat properly with the rngs. So I am curious if others have had problems installing after market manifolds that have been purchased as replacements.
My next attempt will be to try using a GM exhaust manifold that may become available.
