Hey 90,
The mounting is with simple Z brackets, so they should fit. As far as "messing up the body lines" I think all the lines of most of the Bronc models from mid 80s to 96 are pretty much the same. After all it's a matter of opinion anyway.
I was at a car show and saw a Maserati Biturbo, on a chevy 1/2 ton truck frame. It had side skirts from a Trans-Am that were turned upsidedown and shortened, a rear spoiler from a Mustang, and a custom made fiberglass front spoiler. It looked cool to me....like a morphed monster truck. some people though it was a mess. It's all in the eye of the beholder.
Good Luck with whatever you choose.