Guys at the shop caught the respiratory "Bug" like I did for 2+ weeks; so I just got the 67 Barracuda back today.
While they were installing a new (proper) master cylinder, I had them go ahead and instally the Monroe shocks also.
1. All the rattles that I had up front on semi-rough streets are GONE! Glad it wasn't other suspension part noise; as the control arms had been replaced.
It seemed to me like a had a lot less sway on curves also.
2. Put new guts in the replacement master cylinder as well, and now have good strong resistence in the pedal.
**Once the weather warms up a little, I will try to tackle the front sway bar myself.