Yes and no, you can take the projectors from other cars and make them work if the housing is big enough but its more complicated with mounting them but they have way better output for the most part.. The projectors me and booba have are fairly straight forward for easy install for the most part (depending on car tho), they have a threaded shaft at the rear and it bolts through were the stock bulb usually goes with a lock nut with a little trimming of course. If you see his pictures you can see the nut on the back of the housing.