All YJ's are interchangeable, even some TJ stuff is, but not body parts front of the tub.
No Not all part's are interchangeable. there are diffrent engine liter's like the 4.2 4.3 4.0, and there are diffrent aspirations on many the years. carb, TBI, Fuel rail. the Tranny's also got changed and so did they transfercase. Roll cage, tops, even the fender lights. Electrical harness, ect, ect.
best beat is research your Jeep and find out what it has in it. then look for jeeps that where made in the same factory and what the changes where for your model year from preveious and the one after. wiki or JP mag are a few good place's to start.
Most parts are interchangeable as long as it's the same engine type.
for most parts, yes
Not likelyNot likely
Yes they should interchange without a problem.
Very few parts are interchangeable from a YJ to a TJ.
Yes, some will be.
they might be different on some models but they would be interchangeable either way.
No. They are not interchangeable.
No, the computers are not interchangeable.
No. They are not interchangeable.
YJ body type and all parts are interchangeable, 87 thru 95 are all YJ.
Most parts are the same through 1996 of course there are differences with 2/4 door and 4/6 cylinder.