I have a stock NP 231 originally from I think an XJ or TJ based on the shifting linkage and indicator connection. It is a 21 spline input (4cyl and Auto I believe) It has an amazing amount of slack in the chain, I am also including and entire second rear case half, rear and front out put shafts, chain and shift fork and collar, all which are in perfect shape. I have not cracked open the t-case and have no idea on the internal condition. Shifts freely by hand and engages between the inputs and outputs as it should by hand.
$100 takes it all.
If not, I'll toss is on craigslist for more, may even re-build it and sell for way more.