A body parts availability

you can pretty much build an E body from a catalog these days.

B's have an enormous following, and a price tag to match. but also tons of parts.

most of the 2nd gen 67~72 A's aren't too bad, but you'll run into "one year only" stuff with pretty much any make/model. however, in that set the darts enjoy the most cross pollination of any of the bodies.

trim and interior will absolutely kill you so try and find one as complete and decent as you can to start with.