My local track now has a Roar spec 17.5 2wd buggy class and I was looking to put a car together. Now I am familiar web a mod setup but I can't make heads or tales from the regulation what is acceptable. Now I think I can turn the can timing where ever I like. Can someone please explain the difference between a Just stock Esc, a stock spec esc and what am I allowed to have. I understand that the Just stock has punch but now boost or turbo. And I have idea what the Stock Spec has and what I can use. Thanks In advance.