The cylinders have been ported. What size carb would be best to run on my banshee.

 

Depends on the kind of porting etc..... but more than likely if your wanting low-mid range but still pretty fast on top I would suggest 28mm flat slides. Something like a keihin pwk or something similar. If you dont want to spend so much though mikuni has some cheaper alternatives. You could probably trade your 34s straight up for some 28s with another owner, although if it was me Id keep em incase you decide to go drag racing or take a dune trip or who knows, you might miss em.