These rock and roll bed hinges are being offered on eBay for T25 camper owners who want to rebuild the bed. The listing says, “Camper van rock n roll bed hinges. Quality Italian hinges designed for the use in camper vans. Can be used in either T2, T3 even T4 and T5. These are not westy copies like JK hinges. Brand new and in stock.” The link probably won’t be good for long, but have a look here.