I got the chance to sqirt the bushings with water like you suggested and I found the one that seems to be the issue.

It's the passenger side rear. With the wheel off - it's the bushing off the main support that comes off the wheel hub at twelve o'clock. From the wheel hub - coming off at the top at twelve o'clock the support arm goes to a bushing that is making noise.

How hard is it to replace this one - anyone know? Anyone know how to track down the correct bushing replacement part?

-John