REDMT - I recommend you chat with Nick Acton at Acton Custom Enterprises, LLC (
Acton Custom Enterprises Custom Metal for Cobra's) about floor mounted pedal arrangements. He has made a number of the floor mounted setup like the originals and they look great. Nick is pretty informative on providing you with details about his products, as well as solid instructions on how to install.
I also purchased and installed one of his pedal assemblies with relative ease (need to be careful when you cut into the floorboard of your car...).
Nick is active responding with others on ClubCobra at times.
His email is
streetcobra@roadrunner.com - best of luck on your upcoming project! George