Want to get as much as 11 percent more torque for towing, plus better fuel mileage? By splitting transmission gears with the Gear Vendors Under/Overdrive unit, you'll experience only half the rpm drop of stock when shifting gears, so you stay within the engine's powerband. The close-ratio setup is available to work with manual and automatic transmissions, including both late-model electronically controlled transmissions and earlier non-electronic units. Gear Vendors, Dept. TT10, 1717 N. Magnolia Ave., El Cajon, CA 92020; 800/999-9555.
