What things should I get on a hpi rs4 evo 3 for racing?
It already has a Dynamite .15 Mach engine, alunimum rear supension arms, front and rear knuckles, front bulkhead, and a carbon fiber rear shock tower. It also has sway bars.
Is the Mach .15 engine good for racing, is there different classes for different engines? (I only race electrics, so I don't know)