Add a pad onto the gas pedal. I had stuck a 3/8" rubber pad with a super sticky backing on the gas pedal of my SVT Contour.. Then covered the pedal AND the pad with a 'sock' (made from a Isotoner glove, inverted fingers and zip tied past edge of top of pedal)
It worker perfectly for 13 years...
You could make a pad of all sorts of materials, and attach it with all sorts of devices..
Whatever, as long as it raises the surface of the gas pedal to be closer to the level of the brake.... You are good to go.