Too many years ago to remember how many now ---- my brother in law (best friends then - until I married his little sister) had a pink and white International Harvester (like a version of a full size blazer) and it had a transplanted Oldsmobile with tri power... the throttle pedal was hooked to the center 2 bbl -- and a piece of ROMEX (house wire) was hooked to the other two --- it came in thru the firewall and under the dash and made a loop back to the dash and was tired off to some switch that didn't pull out --- if he wanted to cut in the extra deuces -- he'd mash the pedal to the floor and reach over and pull on this "wire"....
Too dang funny! We just didn't know how - or didn't care - to figure out how to make some "real" linkage.