I don't think there's any OEM holes to line up with....gotta drill the 4 holes.
Here's mine being installed last month, may give you some details you need.
Also note, Dub couldn't get 3 of the rear cladding bolts on the bottom (facing up) to align, so he tried grinding a little off the receiver where the cladding was hitting it, but it wasn't enough, couldn't get them aligned. Cladding is still secure with all the other bolts though.
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