There is a vac form hull and superstructure available from Schoonie Hobbies in Scotland. Its not that specific if your looking to build something screen accurate, but its a good starting point if you want to build one from plastic instead of plank on frame.
it's funny when I was working at Bass Pro Shops , we had one that was maybe 3' long that was made of wood and had great detail for some reason. It was one of our table props for nautical themes. Always wanted it too.
I have one of the movie maniacs sets, as pictured above. It's a nice display piece, but I can't believe how much it's worth now..!
As for the amazing large scale ORCA model posted a few posts above, I highly doubt that will ever be made available now as Pat's business partner Chuck, the man behind this great replica, has very sadly just passed away.
its funny cuz my friend is a big Jaws fan and she was always so pissed off that the Movie Maniacs set was so expensive, and then one day we found it at the flea market MIB for $80. she was so excited. we were lucky cuz the guy had just got a van load of Movie Maniacs Series 1 and 2 that day