I think you would really de-value your gen by customizing it, it may make it perfect for you but if you ever came to sell it you would hit problems, but if you still have the original dial then you can put it back to original, I would however recommend that you start with a noobmarina and customize that first. at about $100 if you mess up if is not a big loss, after that to get something like gen quality then you are looking at a WM9, non of these dials will fit a gen movement though.