The Duster/Scamp brackets are a bit shorter, and the bolt holes don't line up on the bumper. If your brackets fit, they're wrong.
I can send you the right bumper and brackets for $130 plus the ride...would be right around $30 to Florida.
Tony
Are they about 3" shorter? That's about what I'm seeing they need to be.
I'll think about getting your bumper, I'm really leaning towards fiberglass right now since it isn't a street car and knocking 20# off the front is appealing.