You dont build a car by taking a lot of trips to the auto parts store, unless you are Johnny Cash :grin: , he got his parts for "free" and still wasnt too happy with his 1955-1975 Cadimolac.
buy one rifle with the stock you want, send that one in for the other barrel you want, sell the stuff you dont want.
Mainer
The fuzzyness was due to accounting for the trade in value for condition B and not accounting for it in condition A. And you could just buy one set of stocks also. But, its your money, you know better how it will make you happy than anyone. Good luck, and enjoy what you end up with.