I remember doing one on a 115HP years ago...it came with the little PVC stuff. It worked. I think I still have the rig I made to drill the mid section for the driveshaft extension. Crazy holesaw on a rod thingy. I left my extension on for 2 years on a moored boat. When I went to get it off for service it was an absolute bear.....Galvanic Corrosion! Watch those studs through the alumn extension.
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1974 23SF
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