One thing about the P-51, The factory had the wing panel lines, (except for the ammo and gun access), puttied and sanded smooth. Then it was painted in aluminum paint, so the fuselage might be a polished, (and therefore shiny) surface, where the wings will be a duller tone. Modern refurbished P-51's are sometimes shiny all over, but a WW2 combat -51, nope.