Pulley - 74 Duster 225 Slant Six

ED. The first thing I notice is the WP pully is too far forward. Do you have a spacer between the water pump and the pulley? There should not be one there. Any spacer should be on the front of the pulley, and behind the fan. You can download part and service manuals here Parts Manuals – MyMopar this will show the layout for the belts/pulleys.
Where in Volusia County are you? I'm not that far from Volusia county. If you still have a problem send me a message, and I'll give you my phone number. You are welcome to come by, and I'll see if I can help you.