'09 Charger rear spoiler mount measurement

Hi, just bought an 09 Dodge Charger police car. It has two black plugs on the rear deck. If anyone has an 06-09 Charger with the factory spoiler, could you please measure the center to center mount holes for me? I want to see whether I can cover these plugs with the factory spoiler mounts, thanks in advance, Greg

more than likely the two rubber plugs are there to cover the holes where antenneas were for the police radio and computer but i will check my charger spoiler and let you know

my spoiler has four holes the front ones are exactly 30" apart center to center and the rear ones are 31 1/8 " center to center