What is the need for this “official” class? All the rules are out there and have been posted. They are pretty clear cut. These are also volunteer run programs, so it might take more than the 7 days since a body was released for it to make it into the approved list.
While many have issues with the pace ROAR moves, the USGT and USVTA organization is pretty quick. But as the rules state, and other have here as well, it is still up to the race director. A body not in the lost may still be allowed.
From what you have shown before, the two tracks you plan on racing will most likely not be anywhere newar the same rule set. One is racing, the other drifting. While you might be able to run the same boday, at a minimum, you will be running difffrent tires and chassis suspension set up. In all likelyhood, you should probably have two different cars considering how dissimilar the types of driving that will be occurring.
I hope you able able to find your place in onroad racing. It’s a blast. And while there may be more technical specs than off-road, don’t get caught in the weeds, just get on the track and have fun.