Marine Carbs
Let me stir this up.
My ex son-in-law bought a chebbie inboard-outboard. Thru-hull exhaust, flappers stuck open, stopped too quick, injested water into #7. Cranked on it, and blew pos terminal off battery, due to hydro-lock.
Made him park it, when I saw auto engine in it; went through and marined it. Different dist, starter, alt. they have screens over vents, to keep sparks inside.
The marine quadrajet, that cost twice as much- stock auto; vac plugged, vac secondaries. It just had a $200 coat of black paint on it. And yes, it came brand name, and had papers-marine.