P-39 D-1 Or P-39 D-2? * P-39D-1: Built for the RAF, and fitted with a 20 mm cannon in stead of the 37 mm one. (519 built) * P-39D-2: Powered with 1 × Alison V-1710-63 , rated at 1,325 hp (988 kW)Widewing?
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