Yeah, those don't look right on that truck.
I don't think the exact original wheels are reproduced, but I think you can get close. I don't know about fitment with disk brakes, but I suspect the original 16" x 4.5" wheels that would have come on your truck would fit with disc brakes. They have very little offset.
Original wheels are fairly common and can be had for not a lot of money, but you'd have to refinish them. That's the route I went on my truck.
