Guys, this is Mark with Extreme Speed / Motorsport Legends in Cleveland, TN. First, thanks to TN-GT-R for the post on our work. Very much appreciate it.
Yes, we will be making these rear tow hooks available to NAGTROC members and will provide more details next week. The guys in the shop custom manufactured the first rear tow hook for my track dedicated GTR early in 2011. It works great for tying the car down in a trailer (no more crawling under the car to thread two straps) and takes seconds versus minutes to do. And, if you ever need to be pulled out of a tire wall or sand trap, I know from first hand experience that it works well!
That said, here are a few more pics of my car with a standard tow hook on the back. We have since upgraded the tow hooks. These pictures are of the very first prototype. (Pictures are of the same car -- just at different times in its life.)