Found this on CL...
Front Brake Rotors For Quigley E350 Van conversion: 2002-2006
$280 for both rotors. These will cost you $356 - $385 if you buy direct from Quigley.
I have 2 brand new never used brake rotors for a Quigley conversion of an E350. I believe the compatible years are 2002-2006. These are custom fit brake rotors machined only by Quigley, and these rotors will not fit any other vehicle. If you don't know what that is, then these brake rotors are not for you.
If you are interested, I can send you the last 8 of the VIN for the vehicle, and you can confirm with Quigley if the axle build is the same for your part. Contact if interested.
Description: DISC FL Axle Mod for 02-06E VCBB # Items: 2
Description: Machine Rotor DWG#FE6094Y
These brake rotors were ordered for a 2003 E350 Quigley Conversion