I love the truck!!
A couple options for the accelerator pedal: Under the carpet, there should be two balls or nubs located underneath the arm hanging from the firewall. Those balls are how the pedal attaches to the floor, then only rests against that arm.
Here's a link for the pedal.
https://www.brotherstrucks.com/1967-...tinfo/APP0067/
Another option is to replace the entire setup with one of these Lokar kits. Just don't forget the cable assembly while ordering.
https://www.summitracing.com/search/...del/c10-pickup