On my '49, the solid torque tube and single universal joint make it very difficult to remove the transmission. The transmission needs to move backward (toward the rear of the truck) to disengage the drive shaft from the engine and clutch. But to move the transmission backward requires unbolting the rear axle and/or a frame cross-member to create enough flexibility to get the torque tube out of the way. There might be an easier method, but it took me two full days to get my transmission out. I don't know if the '53 has similar issues.
