A customer of AAM Competition from Las Vegas, Nevada hit 916 awhp and 748 lbs/ft tq this past weekend. The car was tuned on a Mustang dyno using E85 Ethanol fuel. Equipped with AAM Competition's GT900-R Turbo Upgrade kit, this is one of the highest HP GT-Rs in the nation. His GT-R runs through 1,320 feet in just 9.97 seconds. A link with further information on the NAGTROC forums just below.
NAGTROC Link