I have the exact same setup on my '66, which I did in 1990 by following
an article in the now defunct Super Ford Magazine. (I also put a grease
fitting on my z-bar)
The roller bearings for the pedal support were from NAPA, originally
used on shop creepers.....
I remember that article. When I started out on my project I was looking through the Grainger catalog for roller bearings that I could use for the pedal hanger but couldn't find anything that would work. I was thinking some sort of flange bearing but the were all way to wide. So I just sent it off to Mustang Steve. When I got it back, I couldn't imagine where he got the bearings from. Then one day when I was at the hardware store where we have an account from work, I was just going through the draws just for the heck of it and found the bearings! They're listed for landscaping riding mowers.