PS doesn't have a website anymore, but he's still building boats--give Paul a call at 724-329-4413. It may take some persistence, and your odds are better earlier in the morning.
Ed at Murky Water is still also still in the game:
https://murkywaterkayak.com/ His selection of designs is more limited after MW had a shop fire in early 2017, but Ed can make most of Jim's newer/popular designs.