This is not just some after-market towbar, it's a GM towbar made specifically for the Chevvy. The fittings just fit perfectly. The instructions (more pictures than anything else) was clear and easy to follow. They even provide the torque values for the bolts, which is very useful if you're worried about safety at all. Installation was a bit difficult, I would recommend getting someone to help you. It can be done alone though, and was by me, and it was easily done in a morning.