I put a 200R4 in a 1955 first series, and the floor was not a problem.
I do not however like any automatic conversion in an AD truck.
The only way to make it fit is to cut the crossmember that the bellhousing attached to out.
The problem I see with that is that the front cab mount brackets attach to the outside of the frame in about the same spot.
By removing the inner stiffener/crossmember I fear the cab mount brackets will flex the frame and crack it in a already crack prone spot.


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