Evan, some years back I saw a set up where the bell crank was removed and a small section of angle iron was mounted at that position. The stock rod from the pedal ran through a hole in this plate and the flex cable was connected there as a puller, similar to your instructions. If I remember the stock rod was bent at the tip to attach to the end of cable.
Many thanks for the feed back. Now just need to make it work.
Jim


It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed