The new prototype, developed by Porsche AG Stuttgart for customer racing in LMP2 is powered by a newly-developed 90-degree V8 endurance engine, fitted with ACO regulation air restrictors, delivering around 480 hp from a 3.4-litre capacity. The lightweight power plant features a very low centre of gravity, four valves per cylinder, a dry-sump lubrication system and single cylinder throttle valves. In compliance with the 2006 ALMS regulations, the new Porsche LMP2 weighs in at only 750kg. This minimal weight was achieved through an intelligent, highly integrated lightweight vehicle concept. The development engineers had the task of reaching the minimal weight without the extensive use of exotic, and hence expensive, lightweight materials. Penske Motorsports campaigned the new Porsche prototype in its first full season of competition exclusively in 2006.