In my opinion, it would require a bit of “re-engineering”. The tubular spar structure interface is one area that comes to mind. The rigidity of a typical aluminum rib compared to the wood is another. By the time you got done, I doubt that weight savings would amount to much, if anything. The wood ribs serve the purpose very well. Bottom line - I believe a major re-design of the entire wing would probably be necessary, but that’s just a very off-the-cuff guess.