Here I am, about the Jacuzzi, I haven't put the G bowl on it yet. Mainly because I couldn't find one for less than $500. After the diverter, droop, impeller, controls, and the shaft material, and whatever else I spent that I forgot about, that was good enough for this year. I haven't gotten brave enough to add it up. I think it would be pretty easy to do though, the two bowls are dimensionally pretty close. For my pump I made a 17-4 shaft and put a Berk "A" impeller in it pretty easy. For the bowl, I made a ring to accept a Berk bolt pattern so I could add a droop snoot to it. I took some pictures of it but I haven't got them developed to scan them yet. You can see some pictures of the boat on my site if you want to check it out.
Brian