Hello I am new here and need some advice. I own a 2002 Caravell 232 Interceptor with a Volvo 5.7 liter GL. Its a 260 hp version that originally had a 2 barrel carb but now has edelbrock 4 barrel. I would like to do some mods to attain 375-400hp range. I want to do a cam head combo, intake as well but have some questions. Any idea if the cam is roller or flat tappet. WHat cam head combo would you suggest? IS there anything special about the heads to run for marine use? Assume I know nothing.. Thank you for any help or suggestion.