Vincent:
You can go to the Forum on Antique and Collectibles on this site and ask owners their advice on your build. Everyone there is very helpful.
Suggest calling on going online to Pete Clark at
www.fasttimescobras.com.
Pete made my pedal assembly but it has a clutch pedal, don't see why you can't use same box and leave the clutch pedal off. You never know you may want to switch to a clutch later on.
Jim