Hey Dick,
The OMC 2-bbls are installed on 4.000" centers top to bottom. Not sure about the Merc's, but have a request out to a friend with a 120 motor.
What is your cyl-to-cyl centerline distance? Have you given any thought about the 12-pack?
Tim
PS Will gladly send a carb or two for fitting purposes (not sure if I have six).
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