Well, lots of places out there. I did my Parker-Hale and used a Boyd laminate.
Basically any mauser 98 type action stock will do. A 30-06 parker hale is mauser 98 large ring style stock. A little bit of sanding and fitting and you should be allright.
So, google Boyd stock, Richard Microfit or mauser 98 stock and voila you should find what you need.
Hope this help.
Gaetoune