Little update here. After evaluating the all the cars we were considering, Charley's SAAC Mustang was the stand out for my buddy Anthony.
It was a bit of an ordeal for an anxious new owner, but Charley couldn't have been cooler. Even needed to get a little assistance from Stefano and Nickey Chicago. I really have to thank them both for such a great experience and the car is everything we expected.
In comparison, some of the non-supercharged choices just seemed under powered and non of them had a tune anywhere near as smooth as this SAAC car.
The car has some really great history behind it, and I am surprised how more and more seems to keep surfacing.
Also wanted to thank Tony "Old 5.0" for his perspective and help with learning just why the SAAC MkI Mustang was so significant.