But it doesn't seem very hard to bore an XL 185 out to a big bore 200 either? Sssshhhh don't let bag out of the kitty
I have two CB750 engines here that have XL185 oversize piston kits fitted, making one about 798cc and the other about 820cc, straight bore outs as the piston pin size,,piston top and skirt depth are the same as CB754 stock. Can use stock size gaskets too
You mentioned amount of gears somewhere?