I have a Super Chipmunk - N7DW. It was a British trainer 51-55, then went to Australia until 72 when it came to the US and was certified as experimental exhibition. Finshed the Super mods in 73 (metalized wing, larger engine), then flew as an airshow airplane off and on over the years - maybe until early 90's. It was converted to open cockpit in the 80's, along with beefed up tail.
I bought it last summer - airworthy but pretty ragged. The Baltimore FSDO inspector took a look at it, took a liking to it despite the issues, gave me a list of stuff to fix (on a promise) and wrote me a new airworthiness certificate. Very few restrictions. Aerobatics etc are fine, just need to tell them when I fly it to events. I can send you a PDF copy of the restrictions if you want.
I flew it awhile then took it down in Oct for limited restoration. I'm doing the work myself with oversight by my local IA. Replacing top forward fuselage panels, windscreen fairings, refurbishing the cockpits with help from Oregon Aero. Sent out the stuff I can't do - getting a new carbon fiber cowling, overhauled instruments, prop and hub, new exhaust manifolds. Plane Canopies molded new windscreens. Engine is good.
This is my first experimental airplane. I didn't want to build because it takes too long and I like to fly. I am totally a fan of this experimental exhibition Chipmunk - a solid, proven airframe built in the factory, lots of improvements over the years with no STCs required, and I can continue to restore/improve it. I'm working closely with my IA and FSDO to ensure I don't mess it up, and lots of other folks who love old interesting airplanes have helped solve problems. And a really fun, beautiful airplane that looks like a 1930's Cleveland racer.
The good thing about experimental exhibition is also the bad thing. It can be modified without the tight standards of a certified airplane. You don't know how it's been done, or by whom. So there's some risk to go along with the fun. Regards, Mark