That trans. is notorious for breaking the tube off the front brg. retainer. If the collar is still on against the front brg. with 4 bolts, then the tube is broken off. If the complete assembly is gone then someone has taken it off for another truck.
I don't think it available new but you might check with Novak trans parts.

George


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
In the Gallery Forum