POPSRACER, HAVE YOU GUYS HEARED OF THE COMPLETE GRAPHITE CONVERSION FROM PENGUIN?ITS CALLED P3000 OR IS THE GRAPHITE MOLDED CHASSIS FROM HPI PART#A383 ANY GOOD? WHAT IS THE MOST IMPORTANT THING TO UPGRADE FIRST? WHAT IS ALSO A GOOD SPUR/PINION COMBO FOR STOCK RACING?