You can, but, those cables you refer to have a large s.s. wire that’s hardly flexible, because the systems they were used on took a lot more umph to move the shift and throttle. So, I would not suggest it at all. The other concern is, the carb on the early Evinrudes (Tillotson) are super fragile! You do NOT want to place any significant stress on them as they will crumble. The throttle lever (arm) moves easily, so a thick wire is not necessary. The throttle quadrant on the Tillotson has a clamp to clamp the bowden cable and the throttle arm has a barrel screw. Make sure that barrel screw rotates freely on the throttle arm and the little ratchet spring-loaded pin is free and doesn’t bind up in the quadrant.
A ’29 Speeditwin on that boat will be fun!
George
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