Rear Bumperettes (guards) for 75 Duster.

Looking for pair of rear bumper guards from 74 to 76 Duster or Dart Sport in excellent condition. A little rust inside is fine as long as the mounts and cushion hardware is OK. My car is no show car, but am getting a rechromed bumper, so need something that will look decent with it.
non-Sport Darts or Scamps will not work. (already bought a set:BangHead:)
I believe the part # is 3754066, but don't know if it appears on part as mine are extremely rusted inside.
Thanks
Keith