USA Standard Gear Ring & Pinion Gear Set - GM 8.5" - 4.11 Ratio 121003 The new handheld tuner was

The new handheld tuner was designed specifically to give you the most power at the best price

They now offer it in other pans also

Vehicle Applications: 1998-2002 GM F-Body LSX Lightweight Solid Engine MountsVehicle Applications: 1998-2002 GM F-Body LSX Lightweight Solid Engine Mounts

- Stock Collector - Shortie Style

090 tig welded aluminum

USA Standard Gear Ring & Pinion Gear Set - GM 8.5" - 4.11 Ratio 121003 The new handheld tuner wasUSA Standard Gear Ring & Pinion gear set for GM 8. 5" in a 4. 11 ratio USA standard Ring & Pinion gear set for GM 8. 5" in a 4. 11 ratioUSA Standard Gear sets the standard for quality OE replacement parts at affordable prices. USA Standards provides the widest selection of drivetrain replacement parts on the market, including ring & pinions, axles, Perfect Fit driveshafts, Transmission and transfer case components, and installation kits as well as the