M6 side pods to not bolt up M4 side nerf bars. I’d upgrade to the M6 nerfs as I was having issues finding M4 side pods over a year ago. Comet kart sales carries Tony and FA sticker kits. You could try calling to see if they can get the Kosmic.
From my son’s experiences with stickers and the M6 nose, they are a pain to put on. Just a warning.