The Mk XIV and Mk 21 have different engines. The Mk 21 obviously has a higher full throttle height(FTH) in the medium supercharged(MS) gear.
Btw: I believe this plane is on the list of possible perk planes...?
P-51H
Engine: One Packard Merlin V-1650-9 warp drive rated at 1380hp for takeoff and war emergency power of 2218hp at 10200ft and 1900hp at 20000ft with water injection.
Maximum speed: 444mph at 5000ft, 463mph at 15000ft, 487mph at 25000ft.
Climb: 5000ft in 1.5 min. 15000ft in 5 min.
Service ceiling: 41600ft.
Weights: 6585lbs empty, 9500lbs loaded.
Wing span: 37ft, Wing area: 235sq ft.
Oh, and: The P-51K differed from the P-51D in having an 11-foot diameter Aeroproducts propeller in place of the 11 feet 2 inch diameter Hamilton Standard unit. These were all known as NA-111 by the company. The P-51K had a slightly inferior performance to that of the P-51D.
[This message has been edited by juzz (edited 07-16-2000).]