my scoop didn't come with instructions or anything to center it on hood. I need to know how big the holes need to be drilled in the hood.
I started with 1/8" too. The problem is on the underside. To get the nuts to thread on the stud, you'll need bigger holes on the front studs. The holes are right on the supports for the hood. They have to be bigger than the nuts, but you don't want to go through the other side. I used a bit about the size of the nuts, and then flared out the holes a little with a punch. You have about a 1/2" of space from supports to the hood.