Any of the current cars out now can win on any given day so take your pick. Tekin,LRP or Novak all have very nice brushless setups. 7.5 or 8.5 for
2whl is perfect. Dont waste your time on a sensorless system for 2whl. Stick with a hardcase lipo like trakpower,orion,smc,tekin ect. most of the current hardcase packs drop right in. And you can get away with one pack for a race day.