I have the original seats in most of the time - for being 15 years old, they are still in remarkably good condition:
As for being "nonstandard", all of the parts used in the conversion were Porsche parts - I have a complete list of all the swap parts - Cayman clutch, Cayman airbox, new flywheel, etc. Protomotive progammed the computer such that you can plug it into any PST II and it will recognize it as a standard Boxster computer.
You're right - I doubt someone would offer me what I would need to get out of it - I would have to get $25K+ to make it worthwhile to sell.