"...Many Britishicon rifles had the U.S. Property stamp..." When the Savage contract ended, all remaining rifles, parts and machinery was shipped to Canadianicon Arsenals - Longbranch. The rifles were subsequently issued to CF units. Had one on my MIU long ago.
Problem with restoring milsurps is that there are no stock sets left by any maker. Finding a Savage stock will be expensive and difficult. However, try Western Gun Parts then Gunparts Corp, Stateside.