The headers need to be unbolted from the cyl heads before engine removal, as the collector is outside of the suspension upright. Any attempt to remove the engine with the headers attached will result in the collector portion of the header catching on the suspension upright (aka frame). It would be kind of like sticking your head, arms, and shoulders through a picture frame, extending your arms around the outside of the frame and then trying to back out of the frame without moving your arms.
I can remove the exhaust pipe/muffler assembly ('71 car) without removing the half shaft. They have the 2 1/4" exhaust pipe and the welded flange.
John
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