Bobby, I appreciate your comments. I crawled under the truck today and had a good look at the transmission. There definitely is no adapter, it bolts right up. If it's a Powerglide, it is different than the one in my 63 Impala. They cut the crossmember out to accept the automatic, there are about 3 inches of crossmember left on each side. The engine has left and right motormounts. No front mount.
You mentioned that the rear axel ratio may be that of a car. It's easy to rotate a wheel and count the driveshaft revolutions on an open driveline. Is there an easy way to tell on these torque tubes rear ends?
