After years of a squeaking clutch pedal and changing out the clutch master cylinder to no avail, I finally found the problem. Loosening off the bolts that hold the clutch assy to the firewall I pulled the assy about an inch away. Using a mirror I could see where the bottom right corner of the plastic pedal support had rubbed through the paint on the firewall. I placed two of my fingers between the pedal support and firewall and pressed the clutch pedal down. No Squeak. I then used Ford's Brake Silicone and Dielectric Grease to lube the firewall area where the rub marks were and the noise is now gone.

Hope this may help others with this issue.

 

I bet you are happy that squeak is gone. That would drive me nuts

 

I am gonna have to try this.