This bracket uses one hole in the head for mounting as well as the top bolt on the water pump (passenger side) and the front bolt on the intake (passenger side.)
This alternator bracket uses the first groove (groove closest to the balancer) and the A/C unit uses the second groove. If power steering is used with bracket #91667920, the power steering belt makes use of the third groove (farthest foward groove) on a three groove pulley (our pulley #91015480.)