I think the engines will surprise many with how well they will perform in that boat...you need 280 K Planes to launch it though.

As for the Alphas...DON"T DO IT. Strong power and Alpha reliability is marginal in a light boat...but in a heavy boat...make sure your Sea Tow Policy is active...because you WILL be using it!!

It's not that hard to upgrade to Bravo 1's...find a solid pair...even good take offs and re-build them. Your transom is already drilled for Bravo Gimbals.

Stout 383's are making 450 # ft of torque and that's close to base 502 power...not to mention what saving 300# in the stern will do for that boat. You'll end up with a rig that you can enjoy on the cheap for several seasons...then maybe consider upgrading to the latest LS technology available a few years from now.

Sell the Alphas, add the extra $$$ to shop/buy the Bravos and make them part of the project...you'll be glad you did.

Check out my thread on the restoration of my 79 Formula 255 Liberator to see how I set mine up.

Good luck and keep us posted.