Shawn at Proformance Prototypes said the he could fab up custom drag steering knuckles for the 500 using a banshee style spindle. Of course there will be no provision for front brakes but it will allow you to run either stock banshee hubs or any of the banshee style spindle mount wheels.  He just needs someone near West Olive, Mich. to let him borrow some stockers to use as a pattern.