Thanks for an informative post. I think I like the idea of the GT class for now. I personally like the 5.7 for the hp factor.

So lets say the 5.7 gets factored because of a drag pack car blows away the index (as we have seen in the past). This will then raise the factor for my engine in GT too? Correct?

thanks again for the input...justin

Interested in having you car wired? Drag car, street car, EFI swap? PM for details