You might be out of gas bro, lol. Check with a body shop that does body work or a Jeep Wrangler specialist. You might be better of with Jeep Wrangler upgrade for a more current year with specs you want. Im sure you can sale Jeep for top dollar.
The climate control in 97 Jeep is completely different from a 2002 TJ with three knobs. I mentioned a body shop that does custom body work because sometimes they can set up for you. Also a Jeep speciallist like a planet OffRoad or 4x4 parts could also figure out a way to install climate control with three knobs instead of current climate control you have from factory. I dont think its possible, but im not sure. That's why I mentioned before upgrading your Jeep to a 2002 TJ might be the answer.