What are the parts (numbers) do I need to plug into my fuse box for a 69 camaro RS/SS. I believe one is a flasher unit and the other Im not sure. My fuse box was bare when I got it so aside from the fuses im not sure what parts to get.

Just a regular flasher relay... any old relay from the parts store will do. at least on my 67, I don't think anything else plugs into the fuse box besides the four power taps for the bat, ign, acc, and lamp circuits for any additional stuff that you're running.