Strong rumbling from front wheel

[scotty]

My van got towed a few months ago by the city. It’s a long story and It wasn’t running at the time. I got it back on a flatbed and then it sat for a while. It’s running again (bad igniter). Tried to drive it and it has a really bad right front wheel rumble now. I drove it about a block and brought it back. It sounds like the wheel bearings have gone really bad, but louder than any bad bearings I’ve ever heard. I jacked up the front end and I can’t rotate the right front wheel at all by hand. The left is fine. I have no idea how they towed it. It’s a 4wd manual with manual locking front hubs.

Does the fact that I can turn the other front wheel rule-out anything as far as damage to the front axels or differential? Do these vans even have a front differential? Thanks