My autozone here has a bolt pattern display. You actually just thread in your own bolt and it tells you everything.
I actually bought the metric bolt replacement kit, had about 100 misc metric bolts and washers, nuts and so on...it was at autozone for like 25 bucks, but it has been a lifesaver. If you ever work on your VX, you are gonna drop one, need to replace a stupid allen head, or break one, then its another trip to the store. Easier just to have the kit...
As far as bolts, I actually ordered mine when I ordered my plate, they were less than a buck. I have a few extras as well, just in case I tear one of mine up.