The rest of us can have a powerfull motor that isn't a pain to ride on the street or roadrace track. I have gone to a different design, in which I machine out your stock manifolds to fit the reed blocks. It uses the stock 28mm carb in the stock location. . I machine your manifolds to fit the reed blocks. The carburators are set back 25mm and are angled the same as the cylinders.
All kits require intake port and piston modifications.
Delivery usually takes 3 weeks. The kits come with complete instructions including photos. I also have other machinists available to do the installations. There is an extra charge for over-seas money transfers. Sorry no credit cards.