How hard is putting a/c back in to a car that has had it taken out? I bought a 95' GS that supposedly has everything a/c related taken out. I'm assuming all the wiring should all still be there though, so how difficult will it be to put back in? I figure I can pick up all the parts pretty cheap because people are always pulling there a/c's. Just not sure how 'involved' it is going to be.