I have an 85 crew cab and i added A/C. The truck was a stripped down military surplus W350. Truck had a tan interior and i wanted the early 90's Charcoal grey. So i located a 90 Ramcharger that was loaded with everything. I installed the whole A/C system and the grey dash and gauge panel face. This was an easy bolt in. The wiring was all there under the dash and out to the engine side of the fire wall. But nothing under the hood. I think I changed 1 plug on the 85 wiring for the back of the A/C selector. As far as cutting the vents out of the original dash in your truck the holes are marked in the plastic on the back side so it could be done. The dash face could be swapped from most any A/C truck.