Fun! I did the same thing with my old Tamyia Nissan KingCab, but they have a bad transmission/differential design and I blew it up very quickly. I remember two friends who had similar cars as yours and I remember it being super fun! Ditch the mechanical speed control and order a $25 ESC and a fresh battery. The mechanical one has so much corrosion on it it will either not work at all or surly catch on fire.