Manufactured by McGaughys | 33089 | 2001 To 2010 Gm 1500Hd, 2500, 3500 With 8 Lug Wheels 3 Inch Lowering Shackles, 2 or 4 wheel drive, McGaughys started off manufacturing suspension parts for classic Chevy cars but over the years they have evolved into a full line suspension manufacturer including Lowering Suspension, Lift Kits as well as Classic Car Suspension parts. Product information updated on 2023-01-30