'Foot starter has to go? Confused.Was it there, but now the hole was filled and foot switch 'has to go'?
You can set up a 3 position key switch to eliminate the stomper.
Was 57 12v? Shoud be easy to wire up with key.
I eliminated my mechanical on the 51, being converting to 12v, but set up a tractor foot switch in place and working on reparing the 2 position factory dash switch.

Chip

'Rusto-Mod'
'51 Chevy 3600 5 window | C4 Corvette front/rear suspension & drivetrain | everything else looks old and stock
'92 GMC Sonoma GT #15 of 806
'91 GMC Sonoma GT Extended cab 1 of 1
Trucks, Trucks.....and more Trucks