This system is extremely versatile and flexible giving the installer many options during installation. The alternator's drive pulley location can be adjusted simply by trimming the spacers. The bracket was designed to fit most Pontiac heads as well as most aftermarket heads (Kauffman D Port, Kauffman High Port, Edelbrock, etc.) The mounting bracket is made from stainless steel. Bolts and washers are also stainless steel.