I still say BS: I give you the specs of the Carrera 3.0 RS. Make note of the aerodynamics.
http://www.carfolio.com/specifications/models/car/?car=990&Porsche
Also and FWIW: you might be riding a grenade. This is old drag racing formula
Piston speed = STROKE times RPM divided by 6.
2.77 X 8500/6 = 3924 fpm
The following maximum piston speeds are from the book, Performance Tuning in Theory and Practice, by A.G.Bell.
Stock Motor 3,500 fpm
(cast crank, stock rods and cast piston)
Heavy Duty Motor 4,000 fpm
(forged crank, peened rods w/ good bolts, forged piston)
Drag Racing Motor 5,000 fpm
(forged crank, alum rods, lighweight pistons, etc.)
You got any of this other stuff beside the crank?
Ti rods? Nah. Carillos or Pauter? Nah.
Tom