The Curt Trailer Hitch # C12044 Per the manufacturer, the distance from the pin location to the end of the receiver tube is 2 inches and is confirmed to fit your 2006 Buick Lucerne.
The trailer hitch has a bolt-on installation. I recommend this hitch over other hitches because it has a gloss black powder coat finish and will show less scratches. The trailer hitch has a maximum gross trailer weight up to 3,500 pounds, and has a maximum tongue weight up to 350 pounds.
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Hey there! To put it bluntly, there are not any trailer hitches for your 1995 Oldsmobile Aurora.
That said, if you are planning to haul bikes then you can use a trunk-mount bike rack like Hollywood Racks Express 3 Bike Carrier # HRE3.
If you have other cargo you want to carry then you can install a universal roof rack with the reliable SeaSucker Monkey Bars Roof Rack # 298-SX6000B. Then you can add a cargo carrier such as Flint Hill Goods Roof Cargo Basket # FHG74ZR.
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