I have been to 5 different NAPA stores around my area, looked on line, been to Autozone, Advanced, and have come up snake eyes. I was at an old old NAPA in Massachusetts and they told me the engine took (2) 1 5/8" and (2) 2". I also have a response from a guy on e-bay who was selling Pioneer kits, I need to call him and confirm he has the kits. If so I will post his information.
Mike