I have recently come across two Kawi Standups both are 550s and one is an '85 and one is an '87. They come on a double trailer that can be loaded side by side with two ski's or for just one you can put a single ski in the center. Both skis have been sitting for a while and need a battey, one needs a starter. Both skis ran when they were parked the last time. Do you guys think this is a good deal? And how hard is it to but a 650 or larger engine into one of those skis? Is that possible?