can i get a rear end from.....

Yes.
They sell the yokes for the driveline on ebay.
You can get disc or drum still.

There is an article around somewhere on the net about it, but I can't seem to find it now.

You know, now that I look into it more it looks like it was a ford 8.8 and not a Jeep.
The Ford Explorer was the one that was really close already.
But either one can be done fairly easy.

Here is one of the threads on it.
http://www.forabodiesonly.com/mopar/showthread.php?p=1969595270
BTW, a lot of Fords used the 5 on 4.5 pattern also.

I recall it being an Explorer also.