Yes, if you don't get a replacement, such as the Boyds stock specifically mentioned above, then you can get a pistol grip stock and cut it down to fit the straight one. I think a lot more work. Here are some examples that have been done: https://rifleshooter.com/2012/11/marlin-336-straight-stock-conversion/ (just pay attention to the stock portion of this last link and not the metal reshaping as you already have straight metal parts.) http://www.dirtydozensbunker.com/showthread.php?t=26952

Me, I would get the new replacement stock and shorten it and keep your original full size. Just my two cents.