Looking for advice. Want to build a Duster to run on a budget.

Really appreciate everyone's input here. Unfortunately, he ended up selling it before I could get to it. I'm going to keep my eyes out for another one and keep squirreling money away for a bigger budget. If anyone knows of a Duster for sale on the east coast I'd love to know about it. I know my dad's was a 1974 but I'm not picky about the year