Even those are getting hard to find in the yards. I haven't found a 400 small block in a long time. The big difference in the pedal that used the pedal mounted switch is in the vertical accerator arm. On late 60s to early 70s passenger cars it's inside the firewall and on trucks it's outside. Not sure about the G van but car stuff would take a lot of work to change. If it ever dries out around here I will have to take a trip to my favorite yards and see what I can find.

Tom