McMillan has the best synthetic stocks for M-14/M1-A's. Dont know their URL, but you can find them on a search engine such as
http://www.dogpile.com or yahoo.
The SeALs use on their M-21 tactials and newer M-25's McMillan synthetics. I have one on my Super Match myself. Love it!
How do you like your Norinco M1-A? Don't know if it's true or not, but I heard one must be carfull with the Norico's becaus the Chines used some crappy "soft" steel on some of those guns. Hoepfully you have a decent "shooter" and one with out the steel design flaw.
Good luck.