Pick-up upgrade for Am Pro II

I don't plan on doing this anytime soon but what pick-ups would y'all reccomend for an Am Pro II Jazzmaster? Looking for something very vintage sounding and wanna stick with the JM single coils of course. Don't really have an idea of what pick-ups cost so no price range right now and seeing as this will be in the distant future I can always just save up for em. Thank y'all in advance!!!