who makes a good marine coil to run with breakerless ignition for heat and vibration ??? thanks

Msd high vibration, or I just got a complete Daytona sensors ignition. A lot of benefits with this setup

or a mercury marine coil.

only Mercury will give you a complete shocking experience lol Weldcrane what 41 do you have? thanks

The Gucci boat that was for sale here

A factory ford coil (5.8L truck) will out perform a msd coil and last 10 times longer for half the money. Msd= junk

coils have become very specific in a lot of ignitions now and you have to match the coil to what you are running...most all MSD boxes call for a specific coil for each box...might me a sales deal who knows but ??? but lots don't play well with certain style ignitions

There is no need for anything MSD on your boat. Not only will it not be as reliable as your Thunderbolt system, you are not going to see any performance gains either. If it were me, I would stick to a good stock coil and be done with it.

I'm taking all the Msd stuff off got Mallory Dist just need a good coil to go with.Mallory doesn't make an epoxy filled coil which I hear is takes vibration better than oil filled

Oil filled is ok just make sure it sits upright.