Mark; it's my understanding from reading the illustration/parts catalogs, that on B & F250 and up if you had 19.5 or larger tire and wheels the truck came with the thin fender lips.
(Buzz beat me to it!)
If Bill sees this, he can set us straight.
Last edited by theodore/teddy; 01-21-2012 at 10:01 AM.
Reason: slow fingers