This kit is not a direct Bolt-On. The hinge bolt flanges' have not been pre-drilled. The bolt pattern of the donor car is transferred to the Universal Application Kit. The bolt holes are drilled on-site. The kit may also be welded where applicable. When ordered car/truck/suv type and model is noted and correct gas strut is applied at the time of assembly. This is why we refer to the universal application kit as a Custom Kit.