can someone help me please...looking for a big bore kit for a 79 cb650z...been told that the big bore kit from the 550 will fit into the 650...also that a high lift cam will fit in but have to use 650 cam gear ie cam shaft sprocket and hy vo chain....if any tuners or guys who have done this give me a shout...or put me in contact with any knowledgeable people....cheers