There is no way that I know of to convert a 3 speed to open driveline. To me, it seems that the best option would be to fund a '55 or newer transmission. No matter what route you go, it will require fabricating a driveshaft.
Just wondering... why do you want to get rid of the torque tube?
-Tim
'51 Chevy 3104 w/'56 235, 848 Head, HEI Dizzy, Corvette Cam, Split Manifold and Dual Carter YF's
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