CURT Manufacturing 121032 Features: Sealed Main Body Prevents Rusting From Inside Out Open Back End On Receiver For Easy Cleaning One-Piece Collar Reduces Rust And Ensures Strength Exceeds V-5 Standards Durable Powder Coat Finish Resists Rust/Corrosion Robotic Welding For Superior Strength And Fit Limited Lifetime Warranty To Original Purchaser Height: 21.00 Width: 12.00 Length: 45.00 Weight: 48.50 lbs Fitment: 1999/Oldsmobile/Aurora/Base Sedan 4-Door/4.0L 244Cu. In. V8 GAS DOHC Naturally Aspirated::RearDrilling Required~ Main Body Concealed~ Install Time 30 Minutes^^1999/Buick/Riviera/Base Coupe 2-Door/3.8L 3800CC 231Cu. In. V6 GAS OHV Supercharged::RearDrilling Required~ Main Body Concealed~ Install Time 45 Minutes^^1998/Oldsmobile/Aurora/Base Sedan 4-Door/4.0L 244Cu. In. V8 GAS DOHC Naturally Aspirated::RearDrilling Required~ Main B...