The F model of the Curtis P-40 Warhawk (about 1300 built) also used the R-R Merlin engine. A copy of the North American P-51 Mustang built under license in Austraila also used the Merlin along with another Aussie bird whose name eludes me now, but, I will find out and post another reply.
This is cool. I 've studied WW2 aircraft all my life but never find anyone to disscuss it with.