I found an 82 Dodge 1/2 ton rear end - 8 3/4", 489 case, 3.23 gears for sale through my local mopar club.
The spring perch dimension on my 73 scamp should be 43". I had the guy measure his (he's about 2 hours away from me) and he came up with 43 1/4". I pressed him for accuracy and he was...