having some spare time whilst doing lude things today thought i would fit my jdm rear number plate holder seems thats not the quick job i was hoping for

whats the deal with the number plate lights i see i am going to have to drill the mounting bolt holes as they are different , but the number plate lights have me a bit confused on my uk holder they attach to the holder but how do the jdm ones fit

as you can see in the pic no mounting points on the jdm holder