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My suggestion is to stay dialed into all of the on line "for sale" sites (Bring a Trailer, Craigslist, Auto Trader) and read the "Prestige" and "Craigslist" threads on Rennlist on a daily basis.
For getting a PPI I'd suggest Goldcrest Motorsports in Kennesaw or German Car Repair in Alpharetta, whichever is more convenient for you.