Originally Posted by b4z
The small fender flares are to keep the front 305s from sticking out past the fender lips. The rear fender lips are there because it would look stupid if they just put them on the front.
I think people feel add on fender flares look cheap and wonder why they just didn't make new front fenders and rear Quarter panels for the Z/28.
The quick and simple reason is cost... New front fenders and rear quarters would require extensive retooling.