I had a set on a 440. The alternator has to be beyond perfect lined up. I knew they were a pain going in and made the decison to make them work no matter what. They look cool and sound cool. They put me on the side of the road more than once. If your going to be dedicated to them,order an extra belt up front. They fray and stretch real easy. You'll think you've got em lined up and yu'll still fray a belt, turn it up over 4 grand and it'll launch the belt. Carry a 5/16 allen wrench also.
Neal.
