Porsche has good news, if you're one of those drivers who simply have to start each racing season with a new car.The company that has practically cornered the customer racing car market with its various 911 racers has just released an upgraded version of the GT3 RSR, a model launched less than a year previously...The four-litre flat-six (Porsche’s largest engine in a racing 911 yet) gains three kW to peak at 330 for the 2011 racing season. The 2011 GT3 RSR has an unchanged maximum engine speed 9400rpm, sends power to its rear wheels through a six-speed sequential transmission and weighs 1220kg.AERO TWEAKS - AND LEDs...Beyond the slight increase in power, Porsche’s aerodynamicists have tweaked the front lip spoiler to generate more downforce (and stability) at speed. Around the rump there’s a new wing and boot lid finish for improved airflow and engine cooling. Improving the 2011 GT3 RSR’s mechanical grip even further (while reducing understeer) are wider front wheels, now 12 instead of 11 inches wide. Rounding-off the 2011 GT3 RSR’s upgrades are LED rear light clusters, straight off the 911 road car. The price for having the ultimate Porsche customer racing machine? A rather princely R3.7-million.