Take two identical "best" guns, one that has been well restocked with standard dimensions and the other with an original stock with unshootable dimensions - which takes the bigger hit on value? Obviously this is a hypothetical question, but I think a lot of this depends on which buyers will be most attracted to the gun - collectors or shooters.
Gnonom's point about keeping the original stock is a good one - I was looking at a graded Fox recently that was in very good shape and appeared to have a lot of original condition - it also had about 6 feet of drop in the stock. The seller suggested that approach - the gun was too pricey to justify the restocking but I filed that suggestion away for another opportunity.
