Actually, the Diablo GT is not much faster than the '99 and '98 SV (only 0.2 seconds faster in the 1/4 mile); the only real difference is the Diablo GT has an updated suspension. I don't know if the Mclaren is "predictable," but I do know that the tendency of the back of the Mclaren to pull in front at high speeds prevents you from taking any corners at high speeds. The Diablo's problem is not back end habits, but high center of gravity. The F50's problem is speed (not enough torque), and the F40's problem is an old chasis which hinders its handeling (not as much as the Mclaren, though; it still has pretty good handeling). The Diablo GT, F50, and F40 have equal lap times on almost every track; I'm not sure about the Mclaren, because I haven't seen any of its lap times. I would compare a Diablo to the F1 LM if there was a Diablo in the same class. I can't compare the Diablo GT to the LM because the GT is little different from the SV; the only real difference is an updated suspension. But the Mclaren F1 LM is very different from the Road car. The F1 GTR is much faster and better than the regular F1, and the LM is exactly the same car as the GTR. And the LM has an even more powerful engine than the GTR because the air restrictors were removed! The Diablo GT was not so much different from the regular Diablo SV; And the Diablo GTR is not much different from the GT. I'd have to compare something like a Diablo GT1 or SE Jota-R to the Mclaren F1 LM.