[ASkipper]

I remeber reading that the Patriot Extremes and the Texas Speed Springs are the same springs from the same manufacturer.

I may be wrong though but I do remeber reading along those lines on ls1tech awhile back. I would go with the double springs as I have read alot about the turbo setups and how boost needs a high rate spring pressure at a high psi rate. I remember parish8 tried to get the most out of a 4.8 in his truck and he had the same issue with springs.

Next time you go to the track just take the motor and butterfly off your cutout to make sure that it doesn't close back.