I am trying to get into racing and wanted to know is the cars that i own already good enough the TEAM LOSI XXX-S Graphite Plus and i also have a RC10 TC4 “ready-to-run” that i was thinking about buying the conversion kit for it is it worth it ..The electronics on the XXX g+ is good but i just purchased the Novak Brushless Super-Sport ESC & Novak Brushless 13.5 SS Motor for the tc4 and working on changing electronics also the XXX g+ has a NEW Epic XX Stock PRO motor in it is either car anygood on carpet with foams......