Need more power!!!!!!

Hey guys just purchased my second zx2. I run circle track dirt cars and need more power. Will be eliminating Ac, power steering and alternator. Had talked about shaving head but afraid it may still not be enough. Rules are no turbos juice or any of those goodies. Had looked at tuners but idk what to get. Will be getting an underdrive pulley and had heard there is a guy on here that custom makes them anyone know this particular individual? Are there any performance small torque convertors for automatics? Any ideas greatly appreciated. Car is a 2000 automatic. Email or text I dont get on here much cell 812-599-6075 Brandon