Someone on this site directed me to a company that makes complete Cameo conversions. You'll have to search but I think one was Gibbon Fiberglass and and the other was Carolina Conversions? But if you do a search, you'll see that others have done this using such conversion kits. I think the cost was about $2,500. I don't know if either is in business anymore. Didn't work for me because I have a long bed truck.
