Which rear end is in it? What size drive shaft and which type and size U joints now
CAb it’s a Dana 60 3.50” chrom moly drive shaft Iirc 1350 ujoints and a strange forged yoke. ( I just swapped as I cracked some bearings in the unjoint and twisted the yoke last year)
What's the doohickey bolt in the rearend? Some sort of sensor?