Indeed - tho to be pedantic the British ones were NA-73's and NA-83's and because we'd spec'd them they came with most of the necessary kit -and adding the "Merlin" later made it the best fighter of WW2
Somewhat off topic but reading around I never realised that the P-47 bubble canopy was adopted after they tested it with a Typhoon canopy.. I think the P-51 canopy was a US improvement over the UK part bubble canopy adopted from the Spitfire