They were actually converted by a company out in CA (forget the name); the Fairmont Futura coupe was the basis. Something like 200 were made over two years, and I believe all were 200 ci I6 powered. Cool little rigs.
As far as the Mopar car-truck, I don't see anything wrong with the name "Rampage".. if they had just given America a shot at the A-body ute, they could've named it anything they liked.