Smaller stuff like a spoiler can't be too bad. Especially if you have nothing to judge it against.

Alot of these wild body kits young dudes like to put on their "rice" type cars love their products.

I bought a pair of fibreglass fenders for my 69 Coronet. They ONLY save me weight. The quality is major scrap, junk, wavey and poor fitting. Also without sidemarker light hole and missing all the holes and captured nuts a steel fender would have to hold onto the grille, headlights and trim.