For painting a Spitfire, would you recommend a single-stage acrylic-urethane, or a basecoat/clearcoat system? Would BC/CC look "fake" on an older car like a '72 Spit? I am currently painting my '31 Ford with single-stage, because BC/CC looks quite out-of-place on a non-rodded antique car. Thanks, Doug Braun '72 Spit