Jim,
Up here the BAR referee affixes the sticker after you take him your paper work and he does his stuff. He seems to put them all on the right side of the firewall, and the CHP pop rivits the VIN number they assign. Here they asked the people where they wanted it just as long as it was easily seen. But I have heard of other places putting the stickers and vins in different places.
I had a picture of Eriks and was going to put it in this post but now I can't find it so the post is really no good to you. Sorry.
Ron