Thanks Kasper,
I actually have one of the few jet boats that were made and am trying to find more info /manual for the engine as I am going to be re-building it soon and the guys who made it "global something or other I think" have also gone out of business. Ron built the boats but cant tell me anything about the engine as he purchased them from global I think (and yes, I googled Ron).
I need to find parts for the re-built, gaskets, seals, o-rings etc and would like to have them before stripping it down if possible. I am thinking I will have to strip it down and take the old parts to someone who can custom make new ones - any ideas who I could try in Sydney?