i have a 1972 chevrolet chevelle. its got its years of paint wear but the paint is 100%. but the "clear coat" is totally gone. does anyboday have any answers to which product is the best to 'uncover' that gloss coat or the best product to buff out the wear on the paint and make it somewhat new again?Thanks! and also...what is the best way to buff...by hand or power or what?