Alright another 336 question! The trim ring on your port. Well there are three of them. Are you talking about the non opening ones on the port and starboard hull walls (I would think not but) or the one that opens into the bottom of the cockpit? Steve is right, I think Hunter switched to Lewmar in 96. My 95 has ports that are of different manufacturer. Trim ring? Lets be sure. Are you speaking about the rubber "spaghetti" that completes the seal on the port itself or an actual plastic piece (housing) around the outside of the port window that holds the inside and outside of the port in place? You can get the rubber at most chandleries. Measure the distance around and see what sizes they have. I wanna say 1/4 inch but that is a hipshot. Heck you could probably get some of each for under 10 bucks.
The anchor locker catch. The sliding pin? Me thinks maybe. Also it is a good idea to put a small backing plate on the foredeck side so the pinslot wont crack. Like in picture number three from top to bottom in Steve's link. (ty Steve)
You might want to start here to simplify things. Call Mike at hunter aftermarket. 800 771 5556 ext 3615. He can probably micro the specs your looking for. If he is still there. Hopefully.
Cheers