Yea, bolted on, the bolts themselves that are connected to the car are fine, its the lil adjusting piece itself that stops how far the hinge comes down that is out of place that causes the door to come down ever so slightly more than it should, I am just lazy to adjust it haha.. I would not weld on for nothing, talk about a pain in the tush if you want to remove. Bolted is fine because it only takes a few mins if you are good to retighten if needed. And the metal on the balt where you would weld is not exactly the best structurally anyway.