Those are great resources! Bottomsiders has them for $162 for the pair. Click on the link below and scroll down to Hunter 26. Lists them as backrest cushions. You can select color, pinstriping, etc.
http://www.bottomsiders.com/boatresults.tpl?pos=s&boat=Hunter
C-Cushions did not list them specifically on their website, but I imagine they can make them up. I will call them for a price quote.
When I am ready to order, I will contact them first to find out how they are made. The ones I have are not original to the boat (multiple existing screw holes in the cockpit wall). One started dropping deteriorated backing board, so I pulled it off. The backing board was thin plywood (almost panelling), and the vinyl was attached by staple-gun staples. The backing board was completed rotted. The staples were rusted and stained the fiberglass.
Thanks so much for the help!