Looks like a labor of love is in order - great project opportunity. In the event you may need a Holly carb kit (Ford 351 / '91 Prostar 190), I just bought one on Memorial Day week ($94.75) only to find out I didn't need it after I opened the cellophane - now unreturnable. Found a speck of trash in the front bowl float seats that had caused my problem. If you can use it, I had rather give you a deal on it rather than letting it sit in my garage for possible future use down he road.
Good luck with your restoration project.