I have what seems to be a turbo mani off of a Jspec S4 engine. I got it from my friend who thought it was a USDM as it is going on my S4 turbo USDM engine. Noticed some differences and wanted to know if it can still be used on my engine. Differences I have noticed between the 2...mine has a small port while the other does not. No bolt holes for mounting the exhaust valve actuator in stock location (as mine) on new manifold. Exhaust valve door rod in manifold clocked in diff positions on both manifolds. All help is appreciated....
