Hi all!
im getting the bike ready for summer with a new chain and sprockets.  
I also picked up the Hondaman ignition box.  I highly recommend it, especially if you are running a cb650 camshaft in your 550.  The power comes on much later(in the higher revs) with the 650 cam and the igniiton box produces a more powerful and reliable spark for the mid to high revs.  awesome. just awesome. 
after the topend rebuild, cam, and porting and tuning i believe i am meeting the stock power numbers and dare i say making 
more power than it did when it rolled off the factory floor. 
A few spirited drag races against a perfect condition 550f pretty much confirms this.
  maybe 2-4 more horses? 

(thats a big statement.)  this thing is running sooooooooo good. 
I also drilled the rotors. A new endmill cuts like butter. 



