bolts

I had an accident last month and since I'm having to replace a few things (rip Vance and Hines pipe) I decided that this is the perfect time to paint the engine. I'm basically doing a complete tear down and re-painting/polishing everything down to the last bolt. So that brings me to the engine...

Hey People, I sold bikewheel the luggage rack but i don't know which bolt sizes to tell him to get. I didn't get any bolts with my used one when i got it. Any ideas? I read in a thread that seemed like it was in the forum somewhere. I just wanted to help him out if possible. Thanks.