3.90 welded spiders

B's had 44" perches

Reference to figure out what you have
Moparts on the Web - Main Index

If the axles have a nut on the end of them, those a not good. Early style rear.

Welded spiders are known as Lincoln lockers for the welders. :)
I looked at the link it doesn’t have 74 a body reference man all this is German to me