Just bought my 1st Boat, 79' Nordic 22. She's Clean runs ok. The SB 355 is fresh w/ "mild" cam. Im looking to upgrade the Ignition to a Performance Dist. DUI HEI . But Im at a loss for Carb ,Intake & the right plugs for a boat. Ive been around plenty of SB's but on Alky. and never in a boat application. Any help appreciated.