[Spits] Painting a Spit: Single-stage vs. BC/CC?

[Doug Braun]

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