Fits Chevy GMC 2500HD 3500HD 2&4WD (11 19) 3.5" Lift Kit; w Overloads; 97530RED tire pressure monitor systems this direct fit catalytic converter also 7 V8 1978 1992 this direct fit catalytic converter also interchanges with OE parts 18450 62050 and 18450 62030 ) Stainless Steel Mounting Hardware Included Yes A set of front and rear N3 Nitrogen charged shocks are also included in the kit drilling or welding Increased ground clearance Levels the front with the rear of the vehicle Torsion bar keys are forged for uncompromised strength Keys are indexed to not stress OE components Upper control arms help maintain factory like geometry while keeping a full range of motion Upper control arms feature OEM style durable rubber bushings Includes application valved N3 series shock absorbers which offer the best in balanced performance for on and off road use