This is taxing my memory A LOT, but I remember visiting family out of state sometime between 1965 to 1968, can't remember for sure. I saw this beautiful mid 60's Dodge truck pull out of a gas station and boil the hides like a John Force burnout. Turns out it was a 426 HP truck special. I saw one for sale on the net, don't remember which site. Maybe perhaps that is what you have and that's why it's different? Don't know, just a guess on my part. Good luck finding what you need. Seems like I may have read about them too in a Dodge pickup truck book.