How's it going guys?  My name's Ryan(a.k.a. Black Top Bomber).  I'm in the process of rebuilding a CB 750.  '75 k motor in a '78 SS frame.  If i had a choice i'd ditch the SS frame and pick up a k frame.  I'm having a hell of a time finding rearsets that fit this particular frame.  Things are going well with the exception of the things we all learn along the way.  I'll post some pics as i get the motor back together.  
Ryan