Scottie, never compare R&T performance tests of two different cars done by different drivers at different times. According to R&T, the 360 Modena has a better slalom speed than the Ferrari F50, which is obviously not true. What does that tell you about the cars? Absolutely nothing! Unless they were done in a side-by-side comparison you won't get any conclusive results. The F40 was availiable in Katillac or non-Katillac version; The lighter, non-Kat version was only availiable in Europe. Not so with the Diablo. In the US, the stock '98 Diablo SV has done 1/4 mile in even 11.9 seconds, faster than even Quatroroute. Ask any one who has driven the cars, and you will find out that the '98 and '99 Diablo SV is faster than the Ferrari F50 beyond 60 mph. Another thing you also forgot to consider is that the Diablo is availiable with optional long gear ratios. R&T may be using these long gear ratios. Something that needs to be corrected, though is that the newer Viper GTS laps the nurbrurgring 1 second behind the Diablo SV: Viper GTS 8 min, 10 seconds, Diablo SV 8 min 9 seconds (not even sure if it was the new SV). But it is still apparently obvious that the Diablo is faster than the Viper or has better handeling, but probably both. Quatrouroute in fact got 1.10 g out of their Diablo GT. That is a fact. Another fact is that the US Diablo GT is no different than the European one. Even R&T got 0.99 g out of their Diablo 6.0, and you think the Diablo GT can not match that? When stating the "facts," be aware that other "facts" exist. You can like one car better than another, but the way you are comparing them is un-fair, and (no offence) pretty cheap. The Diablo is faster around a track and in the straits than a Viper GTS and a Z06.