This F8F is actually built up partly from the old Al Williams G-58 that never got armament or armor, so it's VERY light. It is quite likely the lightest Bearcat flying.
I don't know the exact weight, but it is LIGHT.
Likewise, the Planes of Fame P-51A is VERY light. It comes in around 5,000 pounds, so it is quite spritely in performance. Last time they herded it around the Reno Unlimited Race Course, it averaged 364 mph, which is stock P-51D territory.