RealTruck SuperLift 2.5" Front Leveling Kit 01-10 GM 2500HD/3500 6.6L Duramax 4WD WT-465451 you will want the 150

you will want the 150

020 over head gasket

IMPORTANT NOTE: Requires minor frame trimming to clearance bumper

This AFE exhaust system features 4" stainless steel tubing with smooth curves and increased size to help remove restriction and keeps exhaust gasses flowing smoothly

but you can literally hear more air flow with this installed

RealTruck SuperLift 2.5" Front Leveling Kit 01-10 GM 2500HD/3500 6.6L Duramax 4WD WT-465451 you will want the 150Easily level the front of your 01 10 GM Duramax with this Superlift torsion key leveling kit. More than just a leveling your truck, this kit comes with lower shock extensions to ensure that you don't top out your shocks prematurely. Give your truck a more level stance to fit larger wheels and tires with this simple but effective leveling kit giving you up to 2. 5" of front lift.