91 A/C parts on 90

I just got a 1991 4.0 parts Jeep. It had been retrofitted to R-134 before I got it. My question is if I take everything off of it minus the evaporator and condenser, will they work on my 90? Obviously the compressor mounting is different but I plan to grab the bracket off of it as well. The receiver drier and expansion valve appear to be in the exact same place. Has anyone done this changeover before? Any help is much appreciated.
Thanks,
Collin