Old thread.... how'd you get on?
From the sounds of it, itll be the FS5R50A box? Big heavy cast iron case?

I've just bought one and doing a manual swap on my auto GQ (a surprisingly easy job besides the heavy lifting). I expect when you strip it down the synchros and bearings will be all thats worn. but while stipping down i guess you'd find anything else. If youre doing it yourself, or have done so already - give us some photos if you got any.

cheers, Dylan