Tools for installing bolt-in notch?

[fishmunger]

Ok I ordered my notch and shock relocators from CPP today. I've never done this before but i get the general consensus it isnt too bad...

Ok I have access to an angle grinder with a cut off wheel and a jigsaw for the cutting part. The thing I'm unsure about is how to get off those huge blasted rivets? Do I drill them out with my hand drill (sounds horrible!) or can I grind them down with a grinder or what? I don't have an air chisel or anything fun like that so I'm kinda limited...

Any tips?

Thanks,

Nate