[Jaydee]

The trouble is, my body isn't perfect. The most important part was to have the front guard line up exactly the same to the outside of the tyres. But now the mounts for the front bumpers are at least 3/4 of an inch of centre. So I think it's more important to drill out the body centres for the bumper first, and then redril the mounts to suit later. I think a hole saw will dig into the edge to much, that's why I suggest a diamond tipped tile saw. Scary stuff as my body has already been painted.
JD
I'm trying to find some close up pictures of bumpers.
I also like your suggestion of not using the grommets, they are so big and ugly.
Thanks.