You can get them individually, just buy the ones you think you will need,
hit up Jeff at F.A.S.T racing, or like me when I ordered some stuff from Cascade Innovations I got the jets I needed,
got their needles, 2 27.5 pilots & 2 30 Pilots, an 2 310, 320, & 330 mains,
got my jetting super close if not spot on for my mods,
cascade needles on the 4th clip, 2 330 mains, 2 27.5 pilots, an 2 1/2 turns out on the air/fuel screws from all the way in.