100% bolt on...uses the lower control arm mount and theres already a hole on the rear end brkts for the heim/adjustable radius rods. I bought a car and these where on it..i know they are used but they are very nice/...totally adjustable...easy to install..they are marked left and right...these can be installed in less than an hour... LIKE new and cheap.... $100 shipped to the cont US...Paypal only posts have priority....317 945 2568