I know Tire Rack sells the Brembo kits. I might call/email them and see if they can provide a replacement number or if they have options for those kits. The other option that I know of, it finding the pad shape via a manufacturer's website(hawk is really good about this) then using that to cross-ref some pad compounds.
Pegasusautoracing.com is a great reference for those shapes online as well, and their customer service is outstanding(helps that they're local to me, and most of their staff are actual racers).
Hope that helps