I owned a 320 at one time. Here is how the table worked: You had a tension screw that, when loosened, would allow you to put pressure on the table and it would push down to the flat position (for an extra berth).
If you are looking for something that is removeable, the 350 has that, and I think the old 387's too. I do not remember the 320 being removeable... but I have owned a few boats since then. Talk to these people at Catalina Direct: 1-800-959-7245. I think they are primarily the smaller boats, but they may be able to direct further. If not, let me know and I will find out from Catalina where they get the hardware for their removeable tables. Take care.
- CD
As far as the table itself, I bet you will be forced to going to a yard or cabinet maker/wood worker for that. You would need the exact size of the settee around your table. You are better off making one on your own. I am about to do the same thing (as I do not like the table on my boat). Besides, if you make your own, you can get creative in how it looks and do some really cool stuff. Nothing seems to show more on a boat than the saloon table!
(Just my thoughts)