I was looking at speeds of aircraft at 30k altitude. The aircraft order (with WEP on) is, not too surprisingly:
P-47M, 465
P-47N, 465
Ta 152, 455
Spit 14, 440
P-51B, 440
F4U-4, 440
Bf 109K-4, 430
P-47-D11, 430
P-47-D40, 429
P-47-D25, 428
P-51D, 420
FW 190D-9, 408
P-38L, 405
Spit IX, 403
Well, actually, I was surprised by the Spit IX, the size of the difference between the P-51B and D, and the speed up high of the F4U-4.
By comparison, the fastest Japanese fighter at 30k is the Ki-84 at 350 mph, and the fastest Soviet fighter at 30k is Yak-9U at 385. An F4U-1D is 380, and a Tempest is 385.