mounting template for snorkle scoop

I picked up a real nice duplicate of the dual snorkle scoop for my daughter's 73 Duster but it doesn't have provisions for the mounting studs. The lip on the underside of the scoop is nice and think so I don't thik I'll have a problem installing the studs. I just don't know where they go. Does anyone have, or could make, a full size template of the mounting pattern? I'm willing to pay someone to make one and ship it.

Thanks,
Ken