Make sure you wire the break disc to hang in the brake pads and not slip out, or else it's a b*tch to get back on the old 520's with the Goodyear brakes. Call Morris and ask him how it's done. Trust me - been there, done that with another mechanic.
As a side note, the Goodyear break pads are becoming rare and very expensive, so if you see any on a sale somewhere, buy them. And whatever you do, avoid braking!