I know that my truck is non catalyst. The sticker under the hood is missing, but the guy I bought the truck from gave me a picture of the sticker before it was lost. I don't know how to prove that the picture is actually of the sticker that was in my truck for inspection. I tried running a vehicle history report but since my truck was built in 78 the VIN doesn't have enough numbers in it for the search.

 

Go to Ford and buy a new sticker. I needed one for my Jeep and the Chrysler dealer had them in stock.

 

In 78 there was a weight limit on trucks.if your truck was over that weight it didnt get cats. for example the little red express didnt have cats in 78 because it was just over the limit. In 79 they changed the rules and the little red express got cats.