Morning Matt... no I didn't run my cafe racer on the original carb, I bought a mikuni standard slide type (not a CV) then popped a conical K&N filter on that. I can/will dig out the relative paperwork to refresh my memory on the actual model of carb and let you know. I remember it wasn't as expensive as I thought it might be. I'm not saying it was chirpy, chirpy CHEAP, CHEAP (song in there somewhere) but defo not bank braking figures.... I am a Yorkshire man after all 😁😁👍.... I think you'll struggle to run it properly with the standard carb with no air box. Any pics yet of bike with CB tank fitted, looking forward to seeing them 👍.. cheers, Michael