Is the timing cover original? If so, it takes an 8 bolt water pump. If you have a timing cover that takes an 11 bolt water pump somebody swapped it. Also, how does the water pump align with the power steering pulley? Water pumps are pretty standard. As far as I know, there are 8 bolt water pumps and 11 bolt pumps. The only issue is there are two length 11 bolt pumps. Early 69 had short snout and late 69 all the way through the 70s had long snout