The last 12.3 converted auto that I saw hit the market here locally, sold to a museum for $2100. It was a TRW M14 E2 with all the correct bit and pieces. It would have been rated at an NRA 80%, IMHO.
The current value to someone with the correct license, or a museum would be $1300-$1500.
As I stated above.....
The idea of a parts kit never entered my mind.... in truth it should have!
Unfortunately, about 9-12 months ago the "parts kit" would have been worth quite a bit more than it is now. A previous poster said $950, and I would have to agree. No one will pay more than Wolverines asking price for a parts kit.
John