yeah the engine for the GTR, which is what the LM is based on, was un restristricted and was pushing out around 668bhp like jcsaleen said. However the when the longtail entered racing air resrictors were introduced to keep speeds down (tit heads..why oh why?) and so the output was 600bhp, hence probably the body rework, so less drag meant speeds were not that different!...However i think there will be a car which i think is currently for sale, massivly under rated, swedish, 806bhp, 1160kg, 0-60 3.2 and it is the Koenigsegg CCR. This thing looks amazing and is lighter,more powerful, has bigger brakes and more downforce than the origianl CC-8S which could beat the Enzo so the enzo has no chance againsnt this Volvo (hahaha...volvo) tweaked hyper car!