1971 Dodge Challenger , 4 speed with a OD transmission in it. I believe to be out of a later model station wagon.

The original throw out bearing was 1.421 ID “which made the shaft on the transmission 1.421 ID” . The OD transmission has a 1.25 ID shaft. I have a center force clutch “if that matters” . So when my throw out bearing went out I ordered a new one from center force , 1.421 . Well it is loose on the shaft. So I found “my mechanic did” a 1.25 throw out bearing. The problem is the OD is smaller , which does make good contact on the fork.

My question is has anybody else had a problem with switching to a OD transmission. And what did you do to make it work. I am thinking maybe I can press a sleeve on the 1.421 throw out bearing , to make it fit the shaft.

Any help would be much appreciated.

Thanks