My brother bought a 83 rampage that stank bad like smoke. Even after multiple scrubbings with the carpet cleaner, the seats still stank like smoke if you put your nose up to them. We had to junk those seats. Then we peeled the layer of fabric off the headliner and used contact cement to reupholster it with vinyl. Between those two, cleaning the rug, dash and all interior panels, we got the smell 100% gone. I was actually surprised the stink wasn't inside the heater box.