i own a repair shop and i can tell you one thing that not many people know of,,in early 1953 there were 50 corvettes built all out of aluminum,,and they didn't have the technology to make the paint stay on them,,it fell off with in days of them being produced,so they scrapped the idea of aluminum,and went to fiber glass in 1954 when they were released,,but the true fact is the 50 that were manufactured actually got sold to the employs of general motors,and to this day only 10 of them are known to exist,where the other 40 are remains a mystery,good luck,i hope this help,s.