Rebuild engine?

well depending on your resources there are many routes available.

I don't want to change it up too much. My Jeep and I are at one with each other. I'm not mechanically inclined but we do have access to used parts as well as a decent mechanic. Re $, anything (nearly) would be better than a new car payment.

did you check all the grounds to everything?

Is it smoke or steam? It might be the heater core leaking, check your anti-freeze level and check if the carpet or floor is wet.