I always run a manual tranny.Automat ics take to much power away.I have a lightened flywheel.I run either 4.11 or 3.55 gears in an eight inch rear-end with a spool.Motor is a stock 2.3,with my magical touch applied to it.My motor is usually heard above the other ones.I turn it at 6,000 RPM when demoing.My race car I turn at 7,400 RPM.