I am in the process of cleaning up my 1990 18 classic . I havent had it in the water yet as there are a few things needing some attention . I have a few questions . first off , its a 350 4bbl with spitfire ignition . It is a cone clutch king cobra outdrive with no thru hull exhaust . I was wondering if anyone has this set up with thru hull exhaust and would they mind posting a few pics of the engine compartment . secondly , thos big giant foam squares under the bow .. what are they there for ?? thanks in advance ..