Slick 60's

Hello, I scraped a 67 dually some years back and was wondering if the single wheel F-350 shared the skinny F-250 brakes or if it was a variation using the same brake shoes as a 67 F-350?
Thanks'

No hard data to back it up, but to me, if the GVW goes up, one would expect that they put enough brakes on it to stop the heavier (loaded) truck?