I don't beleive the distributor or fuel pump is USCG approved for marine use. Remember gas fumes will lay in bottom of boat and you must turn blower on to vent engine compartment before startup. Any experianced boater will open engine hatch and look/smell for gas then turn on blower to vent hull.

Things like altenater and starter on boats do not have any exposed spark like a car. Cars fumes leak onto ground. Just be careful you don't install something non USCG approved for marine use... blow up boat... get someone hurt... liability... just a thought...