sloppy steering 79 W200

I just picked up a 79 W200 and the steering is rather sloppy. Other than that the truck is great. I'm new to the older dodge trucks. Can anyone help me trouble shoot before I go tearing things apart and throwing money at it?

For instance, could it simply be the steering box is bad? Or could it be the dreaded "bad knuckle" scenario I've read about.

I also posted this in the truck forum but figured I'd put it here too. Thanks guys. I love the truck so far. As soon as I clean the dirt off of it from the road trip, I'll post pics.

Mike