You would think they could make more than 2250 hp. Pro mod hemi motors make around that with a roots blower. My guess is they need bigger turbos. It is a bad looking car though.
My buddy builds pro mod motors and more and he built a SBC with twin 82's that made 2200. I believe that motor was around 420 cubes.
His latest project is a supercharged boat motor. It's on the dyno right now and so far made 1400 hp on 91 octane pump gas. This would be a sick motor to put in a street car. Idles great and only turns 6k. Made over 1300 ft/lbs too.
Chris