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Coil end. The boot is there but that copper piece is not. Inside the housing it looks like the end of a screw sticking out.
Wspray, There was a post on this web site of a guy doing the opposite of what you are doing,read threw the threads from last week or so
Are you talking about the end that goes into coil or plug end?
The RPMS were 5,000 - 5,500 although who knows how accurate that old gauge is. I will pay more attention to that next time out.
I think glassed over marine ply would be very heavy - much more than cast aluminum.