Eric,
Those are 2 Seriously NICE bikes!!!!!!!
If I were ready for the 550 I would be paying you a visit!!!!!!!

Just one question about the 550. What is the manufacture date?
Reason I'm asking is that my cb750 K6 and my GL-1000 both have a manufacture date of 8/75.
So, when I start looking for a 550 it would be cool to have one manufactured in 8/75.
Charlie