Can't really see the numbers in the pic. This is my dyno before my heads/cam dyno. Pretty flat, but falls off around 5000. Bolt ons: CAI, LTs and cutout. Assuming torque and power levels are equal I would think it would be an evenly matched race.
You really need headers man cause those stock manifolds are really hurting the potential of that car.

 

For a street vehicle a nice fat and flat TQ curve is paramount. TQ is very important for street performance and not peak HP that everyone talks about.