after a quick web search i found that there are way more machos than F/As and both have mods that mainly centered around a beefed up susp. both had "special" graphics (some a bit gaudy) and both had basic engine upgrades (headers,intake,cut shaker,ect.) and some machos did get a turbo ...the early F/As got a bit more attention (from herb) and some did see track time some of the machos had fairly normal drivetrains (403 auto)