The 16x6 or 16x7 isgood for your truck. Just make sure you get the right backspace. The Ford works good. The ones I have are right around 4.25 backspace. A little less would be better. I had a rim given to me that was a 4.5 backspace (I believe it was a GM), it absolutely wouldn't fit the front. It is fine on the rear, but not the front.
Here's a good link that shows the Ford Wheels, they price them at $75.
http://ricksontruckwheels.com/wheels-oe.php
Call this place too, they have new take offs, may be able to hook you up. They used have parts inventory online, but not anymore.
http://www.famvans.com/
Here's s Ford wheel on the front of my 54.