I am considering a repower for my 2006 170cc. I currently have a 06 Yamaha f60 on it. Has anyone re-powered from the f60 up to the newer f70 and can comment on the tangible difference (or not) in power and performance? I think the only other engine I would consider would be the Honda 60, but imagine the Yamaha 70 at the same weight but 10 more hp might be hard to beat. This whole repower idea is a little frivolous because there’s nothing really wrong with my old motor besides it age, but my son is fully grown now and I definitely notice that the 60 struggles a little trying to pull him on a tube.