Manufactured by McGaughys | 33034 | 1999-06 Silverado, Rear Axle Flip Kit, Same as 33156. Kit does NOT come with u-bolts. Kit will use factory u-bolts., 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 2024-07-04. This product can ship by Small Parcel