Power from the engine is transmitted in a conventional manner through the lightweight flywheel, clutch, and Corvette type four-speed transmission. Attaching directly to the rear end of the transmission case is the differential and final drive gear mechanism. A feature of the final drive gears is the ability to quickly change ratios so that vehicle performance can be as quickly tailored to a new environment. Power transmission to the wheels is completed through individual axle shafts with universal joints on each end, or a total of four in-all.