You are right. The first Mustang, the P51A, was fitted with an Allison engine, which was good enough at low altitude but lacked supercharging and therefore had poor performance at high altitude. The plane in the demo is the later P51D Mustang which had an American built version of the Rolls Royce Merlin engine.
Last edited by David603; 08-01-2009 at 01:02 AM.
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