On: For sale replica of the mustang aircraft

[vkou]

315 KTAS cruising speed versus 180 is indeed a bit of a difference.

It's also fair to say that you probably don't want to climb into anything driven by a 'good enough for the Army'-rated engine.

At least, I know I wouldn't.

[nvy → vkou]

Modern maintenance would be fine; just expensive. The problem with old warbirds is they're usually maintained by volunteers who cut corners.