You are looking for what all of us with the cns2 are asking for, my intake didn't match the port at all. I used my die grinder and a barrel rasp to open it up and clean up the inside of the intake. I also made a copper spacer to tighten the carb up.
Actually, I was talking about the size of the tube where it goes into the carb, rather than the port, I can manipulate the port size, but not the tube size. I have seen the stubby aftermarket intake that fits the CNS without the spacer, very nice but the straight stubby design wont work on my bike. I have also seen nice CAST angled intakes, but they have the same size throat (where the carb mounts) as the regular intake.
What I would really like to see is a CAST ANGLED INTAKE that has the proper diameter for the CNS to mount without the spacer. I like the short angled intake (like has been coming on Grubee kits in 2010-2011) but the cut/bent/welded design leaves much to be desired. I suspect metal fragments from these welded intakes have taken out more than a few top ends, let alone what that type of mess does to your air flow leaving the carb. I figure when new fragments of metal from the cut are hanging there, over time the vibration, air flow, heat and some rust lets a fragment loose and bye bye top end. I cleaned mine up inside a bit, but you can't get at both sides very well, no matter how you clean it up it is still a crappy deal....
PS I don't have any problems with the spacer like most people report, my carb mounts solid and doesn't leak. You have to realize the black rubber seal is the seal, not the white spacer. I don't use any sealing compound or anything. When my spacer broke I made a replacement from a PVC water pipe, no problem. The reason I am looking for a better intake is because I want a larger tube leaving the carb, with less interference inside to effect the air flow, and ZERO chance that a metal fragment will come loose and kill my cylinder.....
