Check our wesite www.raylarengine.com under our LSM550.
We already have an all aluminum fresh water cooled 550HP engine with better horsepower and torque numbers available now and it does not need supercharging to do it. Just a little over 500lbs in complete trim an a smaller footprint than the big blocks. also makes a wonderful iron small block retrofit replacement motor for older boats. You don't need to wait for 2009, the Raylar LSM550 is here now!
Ray @ Raylar