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You would need to remove the reinforcing strap then fill in the holes drill the filled in stock for a cross bolt find the right bolt, and remove a small bit of wood so the trigger fits
^ that's kinda grim...I have done it, and it turned out very nice. Just have to remove a bit of wood from the stock, and cut the band. Then I used the two halves of the band, and a mkII stock screw to bridge the gap.