Single alt belt to two belt question
When I added my under hood AC components to my Duster I used the pulleys off a mid 80s truck. It all worked out for me. I removed the single groove alternator pulley and installed the 2 groove from the truck on my fresh rebuilt square back alternator, then just used the crank pulley, the water pump pulley and the AC compressor from the truck. It leaves you with a spare groove on the crank pulley incase you wanted 2 belts on your power steering pump but I didn't worry about that. If your Sanden pump pulley inner groove lines up with the factory single belt, it should work
Cley