Before you go drilling, take a jewelers file set to the head of the rivet. File a flat spot then use a center punch. A 1/8" drill bit is all you need to drill out the shank. Be careful though because small bits like that will break easily inside the neck. There was a member here that has some rivets, but for the life of me I can't remember who. I will dig through my messages and see if I can figure out who it was.
Oh yah, under the plate you will find some glue so you will need to take a sharp razor blade and slowly slide it underneath the plate so you don't bend it to hell.
Found it...NOMAD hooked me up with a few rivets.