There are several on Auction Arms - L461 and AII actions are interchangeable for stocks. There is also this one on Ebay...
http://cgi.ebay.com/SAKO-RIFLE-STOCK-AII-ACTION_W0QQitemZ180314904942QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item180314904942&_trksid=p3286.c0.m14&_trkparms=72%3A1419%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318%7C301%3A0%7C293%3A1%7C294%3A50
Good luck
