Hello Ryoskatekov! I have an 83 ZX as well and I too have a set of 72 240z SU carbs. I added you as a friend. I currently have a built N42 head, with a stage 2 grind, MSA 6 to 2 header, and the twin carbs. I've been reading and studying your pics, but would love to get some more info, as I'm going to attempt to at least get everything installed this weekend? Still gotta order a few more things before she'll be running. Thanks, Jason