HELP! factory locker ???

[SS79chevy]

ok got really lucky the other day and found a mid 70s 4x4 truck in the junk yard witch happened to have a factory 3:73 geard 12bolt in it with the factory locker not the limited slip a locker but some one had took one axle and the pinion shaft was gone i picked up the rest of the rear for 35bucks got it home and found that some how the C-clip got wedged on the axle and i had to take a ****y torch and an air hammer to it to get it free but in the process i broke off one end of the Thrust block so now idk if it will still work or not but my ??? is to eny that has had one of these do they make a rebuild kit for one or do they sale parts for them like a new thrust block or a pinion shaft??? or can these things even be rebuilt? eny one know of a place that could go throught it for me around the dallas/ft. worth area??

eny info on this would be great

Thanx