Eric, yes it was a wonderful thing that formation, plus I had Chris, the Snowbird Lead, in my back seat. (He was quite kind considering I've been learning formation flying at this time of my life, not as a kid in the RCAF.) Most of the time I was fully occupied with station-keeping (it was a bumpy day), but occasionally I did glance over and say to myself, "Holy cow -- this is really happening!".
One of the great things about Vintage Wings is that we fly often enough that the airplanes become tools to accomplish a job, rather than just treasured antiques. The fact that they are rare and very valuable gets pushed back into second place, and you become more concerned about the mission. (...an airplane's an airplane... almost). You actually work the airplanes.
Steve, thanks for the remarks. Yes, the P-40 is extremely maneuverable in that it rolls quickly, and you can pull quite a bit of G at low-ish speeds and it won't snap-roll. It telegraphs when it's getting close to the stall quite clearly. Which means that for an aerobatic display you can keep it close to the crowd -- not just fast passes with a roll. (I'm just figuring it all out!)
Anyway, Robin and I took the Fairchild to the Airshow. It stayed parked for the whole time as we helped out and flew in the show.

Unfortunately during Saturday's show, some numb-nuts opened the cabin door and put their kids in there. And of course once this got started there was a line-up of people to do the same thing. I was over in the lunch tent after my aero display, and Dave O says to me, "Are you really letting people sit in your airplane?" I replied with horror, "WHAT!!!" and rushed over and stopped that instantly. (I regret I was not polite, but I could hear the noise of the Master switch snapping back and forth as I got close.) This was my own fault of course. I hadn't roped-off the airplane, or locked it. (I can't believe how much I over-estimated the common-sense of the airshow public.) Anyway, I put signs in the windows, locked the doors, and then grabbed a flight of Air Cadets and positioned them strategically around the airplane. No further problems. But it was a big crowd for us, @25000, I'd never had a problem before anywhere, and all it takes is one brain-dead individual of execrable judgement to start things going the wrong way.

I'm using a line if this ever happens again: "It costs as much as a Ferrari -- would you just go and sit in someone's Ferrari???" (Actually it cost a lot less, of course, but it's a good line.)