The gas pedal rod boot that came on your Kaiser car" all years" had 2 flanges and was semi oval in design for the hole, one flange went into the engine compartment the other stayed in the passenger compartment. the boots that Tarheelkf.com has is generic and slips the single flange between the carpet and the floorboard. The generic boot in my experience was better as the original was of RUBBER and the heat and oil destroyed it. I have 3 of the generic boots coming.