I have a free AX-15 5spd transmission- useful?

So I'm looking at parting out my 1996 XJ. It's in fairly good shape but the little problems are starting to add up.

One thought that crossed my mind was that the AX-15 manual transmission (which still shifts beautifully after 200k miles) might be something worth holding on to and rebuilding. Word on the street is that the AX-15 is rated for 400 lb/ft but they may be even tougher than that.

Does anyone know if this could be bolted up to a Magnum or LA motor?
How much or a project would I be getting myself into?

Any thoughts would be very welcome.