Old Bald2
Hey guy I did that very thing over 40 years ago using a 49, still have the truck, heres the catch; The torque tube and driveline need shortened. The splines are different on the later car rearend and you will need a 1/2 and 1/2 U joint, custom of course. You need to reweld the spring hangers (perches). The springs mount in front of the axle and not on top, so you have a problem with the wheel in the wheel opening, as well as riding lower. The emergency brake system will have to be rubed. 5 lug axels I overcame by drilling new holes in the front backing plates using the 49 hubs and 1/2 and 1/2 bearings and race.
40 or more years takes its toll, I have it apart at the moment, under rehabilitation. Will be leaving in 3 weeks for the Winter, if I can help before we leave.