I spoke with Rich today and has figured out the prices for the disc brake conversion kit. It will be $850 an axle. That includes the modifed hubs and caliper mounting brakets. He does need a core back for the hubs. There will is a deposit required to cover the cost of the material, I think it was $100 per axle. He will only be doing this if he can get a minimum of four orders, in order to getter a better rate for the burn table. Remember this kit uses Ford F350 13" disc brakes on all four corners with dual piston calipers. The disc and calpiers are off the shelf and do not require any modifacations before being used. Call Rich Brandi at (610)275-5667 to ask any questions or to order the kit.