The Mach 1 chin spoiler has been installed on a 94/95, I saw it earlier this month.
It was one of the worst looking mods I had seen, the only thing uglier is the Saleen Doublestack wing.
My 94 GT had 96-98 lights on it when I bought the car, however I do prefer the 96-98 style over the 94/95 style. Just a looks thing I guess.
I also have 302 badges on the fenders, and a nice throaty exhaust to help people notice, it's a 5.0