There were a lot of little tiny pieces that had to be machined. If it wasn't made from aluminum, it was made from stainless--usually 17-4 PH. Expensive, but very nice to work with. It makes outstanding parts. Notice the cool adjuster screws we made for the control arms. They are left-hand threaded on the inside and right-hand threaded on the outside. You don't have to unbolt your control arm to infinitely adjust the control arm. This is a trick we borrowed from Lemans cars.