I bought this kit hoping to adapt it to my 50 Fleetline, but quickly realized that had no chance of working! So, brand new never installed and no welding needed. There's also a bunch of how-to YouTube videos. Here's the spiel from their website: The Altman Easy Latch kit is a vehicle specific, bolt-on, bear jaw rotary claw latch kit. Our kit features contoured jam plates to match the features of your vehicles doors. Our bear jaw rotary claw latches are each designed to work with the stock exterior handles, interior handles, and the exterior door lock cylinders of the specified vehicles. Each piece of our bear jaw latches are zinc plated to fight corrosion. The internal claws are case hardened and black oxide coated. Each kit comes with everything you need for two doors. The Altman Easy Latch kit will have your doors opening and closing smoothly and safely. All of our kits are designed, manufactured, and****embled here in the USA. Sells on their site for $385. This kit is $250 + shipping.