I can remember when people would purchase Lend Lease rifles just to harvest the parts - and the stock for their pre war example of a non Lend Lease rifle.
I have also seen a few Lend Lease rifles that had "custom work" like mounting a scope, adding a recoil pad and sanding down the stock - these custom rifles also added to the parts havest. I can also remember when the CMPicon had barreled receivers in the Nov - Dec 1941 range.

As a collector of the early variations, the non Lend Lease late 1941 was more
desirable and there were more fakes then original examples - in the "same" condition as the Lend Lease rifles.

Stock values - SA SPG and WRA RS stocks are over the $3000 range while
the WRA WB are around the $1500 - $2000 range the SA GHS would have to equal the WRA WB in price and the SA GHS cartouche is about the number 1 on the fake cartouche list too