I need a better accelerator cable system

From your Avatar it looks like an early Valiant vert. Me too.
Same year V-8's had a cable operated linkage. You can get a V-8 pedal from someone on here.
About 2 months ago SlantSixDan posted the appropriate throttle cable sourced from Amazon. I bought one and the part number is ATP Y156.
I'm still collecting parts for my Super Six conversion.