Fred, I replaced the throttle and shift cables on my C&C 44 in 2016 after the shift cable broke. The Edson information I received with the boat suggested that I needed a 64 series (5/16" ends) gear shift cable and a 33 series throttle cable.(10-32 ends). I couldn't get Teleflex 64 series stuff so I ordered a Teleflex 3300, 22' with 10-32 ends and Teleflex 43 series, 23' with 1/4-28 ends.
It turned out that both cables were 33 series with 10-32 end fittings. Both the 22' and 23' cables worked fine so somethng in that range will work. I didn't have a problem running the cables under the single fuel tank I have in the aft cabin. It sounds like your configuration may be different with 2 fuel tanks but you should be able to slide it alongside the exhaust hose which keeps the fuel tanks up above the hull. I ended up using the 43 Series cable assuming that it will be less likely to fail in the future but had to modify the Edson end fitting in the pedestal. Jon C&C 44 Mor's Childs Play Kingston
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