Assume you have just bought this? Well done, this is an awesome yacht. If it is not this one then it would be a sistership? There are a few in Sydney.
www.adelaideboatsales.com.au/boat/262417/peterson-30-sp30/The SP30 was a completely different design to the Peterson 30s the latter of which were based on a 1/2 tonner IOR design circa mid 70s. The SP30 was not designed to the IOR rule (the advert indicates racing in the Geelong 1/2 tonner fleet but it never was designed to the IOR rule and wouldn't have rated 1/2 ton) rather was a "free form" fast racing yacht designed in the late 70s or early 80s with plenty of space and speed (SP stood for space and pace) and in Aust were built in Rozelle and marketed by Rob Mundle.............the first of them terrorized the JOG fleet off Sydney in the early 80s with upwind speed to burn especially in a breeze and building sea state and also good reaching and broad running downwind speed...........
Yes links on line are hard to find I am not sure how many were built here or in Japan. Expect any of them built here or in Japan would be very solid - obviously subject to normal maintenance and service and repairs as may be needed from unexpected load cases during use.