Turbo slant to a n/a v8 is apples to oranges, I seriously doubt that there is a forced induction slant that will run with a forced induction v8...just saying.....
Factoid: This is oranges to apples, but over on the Lexus SC site (my weekend driver) the fastest SC is a turbo 6, even topping the turbo V8s. But the slant is cursed with a low flow head design so that is a huge obstacle to clear.