Passenger Side. Long Bolt through bottom to block with about a 3-4" spacer. This spacer will be used to align your pulleys. The bolt also gives the alternator a point to pivot on to take slack out of the belt. Top bolt into block near the water pump to hold the adjusting bracket. Third bolt through bracket into alternator to tighten everything up. If I can be of more help, holler at me through email. Good Luck!
