I've seen all kinds of painting configurations on the old Maserati V8 heads over the years. AFAIK the heads were painted on the Boras and on mine at least for the practical reason that nakid the castings had so many crude casting irregularities that they didn't bother to correct by fixing the molds or being more careful so they covered it all up with a very heavy coat of wrinkle paint. Which is what I did as well. Mine was built at the tail end of V8 production so perhaps by then the molds were rough? This looks great too. Mine would not though. Obvious but, have you contacted MIE about the vinyl?