Don't get me wrong, a lot of the guys have pushed the stock block to 500+whp, but it's a time bomb at that point. It's the massive torque we make at lower RPM that throws rods, and most of the guys that go with a bigger turbo (30 and 35 frames, EFRs, PT) just can't resist pushing their luck.
You'll need to sign up for an account to view this link, but this is currently the highest HP build
http://www.mazdaspeedforums.org/foru...beyond-157802/
He put down 823/608 at 47psi, and there's more on tap but we need Cobb to make some changes that will allow us to rev higher. Those numbers came at 7.2K RPM, there's a bit left in the car.