Update:
I have designed a bolt on alloy arm that will not require any mods to the stock arm for the pedal system.
Using the former connecting pin hole for the BMC clevis you can now use a M8X1.25 through bolt to secure the Lever to the existing setup. The Pedal will need to be remove for install though. There is a .787" (20mm) precision through bore that will slide over the OD of the pedal pivot boss. There will be no slop or wiggle room. Slip fit only.
LEVER

Area of fitment.
