If you want to put A/C into a trooper without it , its not really that hard.Just find a donor vehicle with it , in my case its out of my 89.I have it all ripped out and ready to put in the 90.I just need to get that kit that redoes the seals to convert it to the new refigerant , and load her back up.Its a matter of taking out the A/C rad in front of the truck rad , the drier and 2 lines , the compressor , and not sure what to call the part thats piped into your ducting inside the truck.All in all , it took me about an hour to rip it all out.And while I did that , I also took out the cruise control , doesn't hurt to have a spare <img src="/forums/images/graemlins/smile.gif" alt="" />