If you have a good Delco genertator and can find a 5/8 pulley from a 6 volt Delco generator they should swap. Pay close attion to the shims behind the pulley fan combo as they will should go with the pulley being swaped. They may be a little difference in diameter but it should work with the damper and water pump. The adapter install is worth the time and trouble to get the water pump and radiator back in the right location.