Why wouldnt this work?

If it could be done, im sure it would of...

Why couldn't you use a auto xj front driveshaft, and put a stock rear dirveshaft yoke (the one that slides on the splines on the rear of the transfercase) on the double end? Then if you had a way to hold the yoke on the transfercase from slipping on the splines it would work right?

We've been over this before... many times.

It won't work - the stock slip yoke is a single cardan design, not double cardan / CV. It fully surrounds the U-joint that goes in it, doesn't have bolt holes, and isn't properly shaped to fit into the back of a CV joint.

Close, but no cigar. The yoke won't work. You can order a yoke that will (part#3103-27cv). Check this thread>>>>
http://www.naxja.org/forum/showthrea...ighlight=th350

I just read about a guy that did something in the same “fixed yoke” arena. He took the slip yoke part of the rear driveshaft and attached it to the T-case by way of 2 hex set screws drilled and tapped into it. When tightened, they apparently get bite on the output shaft beyond the splines. Then he uses a 2 joint shaft with a slip joint in it (no double cardan/CV – just one joint per side). I had never heard of this, and would never recommend anyone try it…but as long as you are talking fixed yokes…

http://www.naxja.org/forum/showthread.php?t=1024626&page=2