I have a Predator tuner for my F350, cost $369.00. Although I haven't tried it, the literature from Diablosport says you can switch vehicles once you restore the original tune to the VIN it's paired with.
welcome aboard! I still miss my 68 fastback, dropped a 351C in it. I think the 67-68 fb was the best looking Mustang ever. Where in tompkins county are you? I've spent many a summer vacation at Taughannock Falls :awesomework: