Lookin' good. Sorry for the lack of instructions for the rad cover.
1) Remove the OEM radiator clips (black) and install 2 new low-profile clips (white).
2) Place rad cover as shown. Make sure you can see metal under the holes.
3) Use drill and tap I sent to make threaded holes for the 2 screws I sent.
If you must, plan "B", to use self-tappers, will work fine?

