They are both YJ's so if the engine is the same then the transmission should match up too, you might want to be careful that the transmissions are the same model because the transfer case needs to bolt to the rear.
There were a few different versions of the transmissions available, and these varied for several reasons, so yes, engine and transmission model match, yes the years are compatible.
no it wont fit cause ive just changed a 1990 jeep Cherokee transmission it had a 1998 jeep grand Cherokee transmission in it it broke the fly wheel and burned the torque converter up
No, those do not match. For the 1990 look at the years 1987-1995
yes, any top for an 1987-1995 can be switched out
if they are the same engine then yes.
1987 thru 1995 are all YJ's and are the same.
No.
No, for one it is a totally different transmission and all supercharged 3800 models had an HD transmission.
No they should not fit, 1990 is a YJ, and 1998 is a TJ
no
no, TJ top will not fit a YJ
You can go with 87 thru 1995 for a direct fit.
No.