MH, while the powertrain is out, you could pull the top cover and check for safety wire in your ring gear bolts. This is usually not as much of a problem with Mangustas as it is on Panteras, but with your run of luck with the car recently.... If you're careful in pulling the cover, you won't need to replace the gasket. The clutch pivot thingy on the block is a Mustang attachment. And check the jackshaft before replacing it. Seems like the center bearing is the one that goes out.
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