The North American P-51 mustang (which was the best fighter plane in WW2 and some say the most perfect plane ever built) is over 75 years old.
This got me thinking with today modern technology could engineers build a better piston engie fighter today? I know its not war time and we have jets, plus the government isn't issue any frag orders for a new piston engine fighter.
The brits had the RR Merlin but the plane was drawn up and built in 120 days.
Its hard to dream a dream when its 75 years old.