[fordguy40]

Thanks for the replies, guys. I'm hoping that you're right and it didn't have a converter, but this being California, you never know. I've also found info that supports the one-ton trucks not having cats in '80, but only thing is there's a sticker on the driver's side sun visor that refers to the converter, and I'd need to double-check, but possibly the word "catalyst" on the air cleaner sticker. Grandpa supposedly wasn't the type to modify his vehicles and this thing's supposed to have never been wrecked, so I'm fairly confident it's original for the most part.