Fair enough, maybe we are straying from what the OP meant by "spec". One of our local tracks has already established any 1/10 marketed 4WD SC truck will be allowed with 2S and a SC body + SC wheels/tires. I believe they are running 7.5T motors at this point, but nobody has run a 4x4 Slash yet. So definitely it is not destined to be a Traxxas only class at that track. They have had a long standing class (years) that was Traxxas Slash specific. Other brands were not allowed. There is a new track opening and I don't know what their rules will be, but am curious how/if a 4x4 SC class (and SC in general) develops there. I definitely wouldn't want to see it get "brand specific" though, but I do think the original Slash-only class was great for its time.