I noticed on my dad's 3500 drw that the front wheel bolts to an adapter that bolts to the spindle/rotor assembly. How much would this part cost and could it be used on the rear axle of a srw truck?

Curious if this is another option. ;)

http://www.arrowcraft.com/arrowcraft.php?pageid=products&subpid=catalog&category=3&pagenumber=1

http://www.correctrack.com/