Did you know the pedal from the big ol' 70's Caddys fits our trucks without any modifications? The earlier ones are the most attractive because they have a rubber skirt on the bottom that keeps dirt from getting under them. Later ones look the same but lack the skirt. They have a nice stainless insert on them which trims out a ribbed rubber foot pad.
https://www.google.com/imgres?imgurl...MygGegUIARC_Ag this one is what I'm referring to, but it's the kind without the skirt at the bottom. If your truck has ball studs they fit right over them with a shot of Windex in the holes to kinda lube 'em up a bit. It you have a 60'63 you'll need the ball studs. Try to get the hardware from the Caddy as I think it will fit, otherwise LMC or whatever has probably got you covered for those.