I’ll go look it up but I think they used different sized pulleys for different years. I’ll just take a picture of the page and post it here. I don’t want to type all that out.
Sweet!!! I was under the impression that my water pump was already smaller as the truck it came out of had AC but it looks like it’s the “standard” 6 15/16 with a 4 groove 7 1/2” crank pulley
