the primitive one, seems blocky to me and the cars that have them that i race with i just don;t like. the pivot arm i can order for 5 bucks apparently. headliner part would be a easy fiberglass mold and plastic form it. just wanted dimensions that i can't seem to find, it is hard and in now way am i doing it over a weekend is apparent to me. mostly being done do to boredom of having no projects to do. thought it would be a unique thing to have do and learn a few new skills in the process.