Ooh. A fresh built 300 and a painted frame! It looks like you have done a lot already!
It also looks like you have the dual shock front end? I think that was a factory option, my bronco has it as well. Maybe someone who knows more can clarify that.
1984 Bronco, mild built 300-6, Np435, 3.55 gears, 8.8 rear with Eaton TrueTrac, D44 TTB front, 31" tires, MSD ignition, Offy C, EFI manifolds, Holley 390, No AC, 3G alternator, front receiver
1988 F250 "One Piece at a Time" - 460 ZF5 4x4 work truck project under construction