The local track that I am going to run this winter has said thaey will allow the Novak 13.5 in stock but we also are looking at running a separate brushless class. I am going to probably try the 13.5 but I also have about 5 stock motors sitting in my tool box, and that is after I have sold a few. The reason I am looking at brushless is just so I can relax at the track, it may be slower than an Express stock( I see you lurking Tag
) but heck, with the fastest motor I am not going to make the A unless only 10 people show up so I am not worrying about it just takes a little stress off.