I have searched for an answer to this and havn't found one. Wouldn't this be a simple (I can't believe I actually said that) way to increase the preformance of the car?

To partially quote;

Chrysler Crossfire SRT-6 - Road Test

Chrysler gives its Crossfire a swift kick. You may need to bring a fanny cushion.

BY AARON ROBINSON
August 2004

TONY QUIROGA
I want to know what happened to the 19 horsepower that didn't make the jump over to Chrysler's SRT-6. Just because the engine isn't in a Mercedes, it automatically has to lose power? I remember fondly the closely related full-powered, 349-hp SLK32 AMG, primarily because it was scary fast. The SRT-6's 330 horsepower is nothing to sneeze at, but stomp on the accelerator through the kickdown switch, and it just doesn't fly at other cars' rear ends the way the SLK32 did. Perhaps it was the larger wheels, or the green engine in our test car, but with the rest of the vehicle so uncompromised, you don't expect to make any concessions.

Rich