engine swap

Hi y'all, I have this issue that's been going on for several days now in which my clutch just disengages at the bottom of the throw. It happens every so often. It has happened from neutral to first (causing me to stall), 2nd to 3rd, 3rd to 4th, and 3rd to neutral. I even had it happen while the...

I have a 1988 YJ 4.2 with 5 speed. Will a 1993 4.0 out of a Jeep Cherokee bolt up to this transmission. I believe trans is a AX15, has aluminum spacer but drain plug is on passaged side like AX5.