Bull bar .... Help

[ALX5]

This is my first mod with running board and bull bar. I installed the running board OK with the instruction from this forum OK. However, I am struggeling with the process of installing the bull bar. I did everything I was supposed to do still could not install it. I wonder is there somthing wrong or missing from the package. Help me out if you know what is wrong.
1- the P/N in the catalog is 51100305701 and the one in the package is 51130305701. Are we talking about the same item with two P/N? I did get the right part though.
2- I took the front bumper off and applied the templates on as instructed. Base on my estimation there are no holes in the front chasis for me to mount the included oem bolts into. Do I suppose to drill the front chasis?
I would appreciate if you have more information to help me out. I did contact the dealer and they faxed over the instruction. The instruction did not mention this.

ALX5