John,
Thanks for all the info. I know the thrill of warbird racing. I raced in 3 warbird races in St Louis right before I stopped flying about 25 years ago. I few the same Mustang that I won the '78 Nats with. I managed to win 1st place the first 2 years flying against warbirds the guys from St Louis built just for racing. It was great to beat the specially built for racing planes. The third year I was again in first place until the last lap of the last heat when I cut the far pylon (according to the judge). It was a great time racing warbirds. Wish there was some more races in this area. Probably is but I don't know where since I just got back into flying 2 summers ago. Below is a picture of my Fliteglas P-51D.
Ralph