Not sure if this is anyone's cup of aviation fuel or not, but I found this pretty interesting. There is a nut case on YouTube (well, anyone into aviation is a little bent anyway) that is retired AirForce with nothing else to do. His channel is "Jimmy's World". He buys airplanes, gets them airworthy, and sells them. If you have not seen any of his videos you should check them out.
Check out his latest here and if you want a nice project head over to his eBay listing for this Aztec.
1968 Aztec pa23-250 Turbo Normalized Great project and ready to be put back in the air. Turbos spin freely and are tight (one is a little sticky but did spin after a little wd40). everything worked when we started it.
Check out the engine on the Daphne . It's a GPU engine and administered quite well . Carburetor is located in the original position , down under with long intake tubes . Good for high RPM . I'd like to hear performance numbers but it appears that won't be available .