OK, in a recent Car and Driver, a Z06 and a 911 Turbo (2001, both of them), went aroung a road coarse. Guess who won? The Vette by a few seconds, not a few tenths, a few whole seconds. It was done on the same day in the same conditions. Granted, the Z06 can't take the GT2, but with a few mods, it could.
About that Lingenfelter 427 TT, I am unimpressed. The TT on the 350 has 650hp, so 77 cubes only addes 75 horsepower? When it adds 200 to the 350? I don't think so. Something's not right.
And I *HATE* heavy cars. Thats why the 959 and many new cars don't appeal to me. A 4000lb Lambo and 3400lb 911 Turbo, that just isn't right. If you think its safer, if it weighed less, it would crash with less force, so HA!