I have a pair, 1 is complete with 1978 air. Also have a pair of 15x7s with a ton of backspace, used 1 1/8" spacers to get a 9" slick under a Dart. They are drilled for
bead screws. Call 513-423-0595 10-10 EST if interested.
Used to run an F/S Dart with 9"x 29" M&H's on 15"x 7" wheels with 3 3/4" backspace and stock spring location. Had to hammer up the lip on the wheelwell in the area of the widest part of the sidewall.