2005 GMC 2500HD • 4x4 • Duramax • Allison • Denali Style Grill • 285-75-16 Goodyear Wrangler MT/R Kevlar • MBRP 4" Stainless Turbo Back • Diamond Eye Turbo Direct Pipe • LBZ Mouthpiece • EGR Blocked & Cooler Bypassed • PPE Standard Level 4 • Head Gaskets & Studs @ 145,000 MILES