Just an update for anyone who does not have the budget but would be ok with a small project.
I have a pair of Yamaha 70hp two stroke motors that can be used as power instead of the single Honda 90 (these are from the orange RIB I recently picked up). This Zodiac was made to handle twins using a factory bracket (as seen in this video:
) and twin 70s would be a perfect setup with plenty of lightweight power along with the peace of mind of two motors.
You will need to rig the motors and lay out your console/seating to suit your needs. The bare hull (no console, no steering or electronics, no jockey seat), twin Yamahas (comes with both side-mount controls, harnesses, SS props and gauges) and trailer for $8500, or $8000 if you promise to post about the completed boat and update us with your adventures (a special bond has grown and I will miss the boat).
(Thats not fading on the cowl, I just washed it down and those are reflections of the clouds.)