JD,
Rich Mason who owned both of those cars was really a Corvette guy. He actually traded a Vintage Gulf Corvette for the The Dragon Snake...CSX2427. He also had a rare Corvette SR2. He believed they should all be driven.
Back in 1966 I bought my first Cobra which I still can’t find. Traded that for a new ‘67 GT 500 (0962), that just didn’t cut it so then bought CSX2192. Sold both in 1968 to by my first home in Lake Tahoe. Back then they weren’t of much value. After years went by and kids growing up got back to the “hobby”. Since then have had a few more...’67 GT500 0195, ‘69 GT350 0184, and ‘66 GT350 6S2055 track car. Like most of the “gray group” time came to downsize. Interesting that at 74 I can’t remember what day it may be, but do remember vin #s of past Shelby’s along with the good times and lifelong friends.