From
Baugher's site:
"Specifications of P-51A-10-NA:
One 1200 hp Allison V-1710-81 twelve-cylinder Vee liquid cooled engine. Performance Maximum speed was 340 mph at 5000 feet, 360 mph at 10,000 feet, 380 mph at 15,000 feet, and 390 mph at 20,000 feet."
390 or 410mph @20k, Quite fast anyway.
Edit: Looks like 109 G-2 and 190 A-5 could be good match for that one thought I would rather see one with .50 cals

[ 10-24-2001: Message edited by: Staga ]