Paint adhesion .

[Fordestes]

What is the best surface prep and primer paint for my 30 coupe ? I am planning to do the body and paint , the way it is now the paint is curling up and flaking off, I agree this will happen due to no primer been used , about every model A I have seen the paint flakes off after a few years , what primer and finish coat will stay on beside Imron ? I thing the key is good surface prep, what do I need to sand off old paint , clean the metal and prime for longevity ? Thanks, D. Estes