We would never beat the Spitfire! (Soviet era technology here)
What's that, about 425 knots?
Gent in Fla has a bright yellow one and plays havoc with the local dogfighters in their Marchetti SF260's. They'll be on their way to or from and he'll drop in on their formation from 5,000 ft. up shouting "guns-guns-guns-guns!" into the radio. Then it's "Bandit! Six o'clock high" and they break formation as he knifes right through the middle of them. Of course, they regroup and put on a good show of going after him, but there's really no hope with all the power he's got. He just rolls up the power, reaches for the sky and shows 'em her tail.
All the company pilots down there know the guy and it's an occasional "extra" for the paying customers to get "action" from a bona fide warbird like that.