Intake i would say super six or offy four barrel intak, kickdown and throttle cable will also need to be redone early veight darts barracuda valiants or slant six would have the throttle cable pedal that bolts in your wagon
I just love the look of those long runners especially on a wagon like mine. Debating whether to go eddy 500 cfm or Holley 390 either on Aussie long runner or Offy intake.