Just wanted to report on the replacement stock I got for my AK. I went with the Tapco T6. Yes, I know...this is not a rugged stock that I would want to have if the AK was going into a combat theater, but.... for range use/fun...for $40...good enough, as far as I'm concerned.
This stock completely corrected the length of pull issue I have with AKs. Removing the stock that came with the WASR 10/63 involved removing two screws then leveraging a large screw driver into the receiver and pushing it off.
Got the stock via Amazon.com
I did not use the little tiny screws supplied by Tapco, but instead drilled starter holes, with the supplied bit from Tapco and used the much longer/stronger original screws, had to use a power drill with a phillips head bit to get the necessary torque to get the screw countersunk, the front most one particularly, so that the spring and guide rod would go back into their original position.
Here are pics of the results: