It sounds like you're describing Greg's 1990 33' Power Play. Not sure if he owns it anymore. He actually boated out of St. Joseph, MI. Doctor Dave built the 565" engines with Stainless exhaust manifolds. The engines probably make a little more than 650hp---I think it's more like 750-800hp. That thing hauls the mail! I considered it before I bought my A/T.
Doctor Dave knows that boat inside and out. You can call him at 269-944-0214