I don't know if they would do that. They usually only replace parts to the same config as when it left the factory. Worth a call though.
Recently I called about one and wanted circassian and It was a no go since it didnt have it originally. Then was told $250ish for a buttstock and $175 for a forearm. Plus shipping both ways. Pricey but cheaper than going the custom stock route and it would be done right.