I have a 21 spline NP 242 that came out of my 88. It needs to be rebuilt, not shifting and probably a stretched chain too. Its free, but a trade for a useful part would be cool.
If you still have it next time I swing back through San Diego I would be interested in it. I have been thinking about converting one of my XJs to full time FWD for the sake of Varmints learning to drive in the snow.
Don't hold it for me though. I have no idea when I am going to be back down that way. I might make it to AAT in August, but that's not quite to San Diego.
If I don't put him in the Jeep then it is a '90 Chevy 3/4 ton 2wd pickup with a TBI 350 and an SM465 stick. Truck has a really stout spring pack in the rear and a remarkably responsive throttle. With no weight in the rear that thing will get sideways real easy. I don't know that I want a teenage boy set up for that much fun right out of the gate. I know what I would have done...