Designed for use with GM 60 to 80 amp alternators, these Serpentine Conversion Kits incorporate genuine Billet Specialties style, quality, fit, and finish. Brackets and pulleys are machined from billet aluminum. They are available in your choice of polished or black powdercoated finish. The kits are engineered to bolt-on and align correctly right out of the box. Stainless steel hardware and turnbuckles and QA1 high-quality rod ends are included!