I would imagine all Dynas would use the same frame for production costs but mustange would def know. I called them one time awhile back and they are very knowledgable.
Always check the manufacturer for exact fitment, But generally WG seats don't fit other dynas because of the slightly different rear mounting hole location on fender. I think you could drill a new hole if you were so inclined, but then you would to have plug the hole if you moved back to a non-WG seat.