The seat bottom on teh TJ seat is thicker than a YJ, the YJ has a slightly
taller mounting system, the mount from the TJ doesn't fit the YJ ,
you have to put the TJ seats on the YJ mounts.
Supposedly one of the better seat swaps is a 2001 Pontiac sunfire,
they are better quality and a better ride by internet accounts. You-tube has some film... :D
The sunfire seat bolts straight on to a YJ slide..