David,
I'm about to install a couple of Reutter badges, and i'm as nervous about it as you. I want to make sure that i've got it on the right spot.
Since you are mounting on a curved surface. You will be dealing with a tricky placement. I would take a piece of low tack masking tape and apply it to the back of the emblem. Keep in mind that you need it long enough to reach both mounting post. Now carefully take an x-acto blade and trim around the curve of the post.
With a pencil, mark the center of each post on the tape. Now, with the tape on a flat surface, take a straight edge and connect the mark's for a horizon line. Apply the tape to the front of your car. This will give you an idea of the positioning and the location of the holes. You'll want to apply a curve to your emblem before actually attaching it, so the edges won't lift.
When you have it done, head over to the Pleasantville shopping center on Saturday at 7:00 PM to show off your work!
Maybe I'll see you there - Mel