What are all these holes for?

Yea I have it. It says nothing about the extra holes or the pens on the block ends. This is my first intake swap so I am having a local mopar guy swing by tomorow and give me a hand on putting it all on just to make sure
I do it right. I made about 6 phone calls tonight when I was taking it off. It always helps to have friends who are old timers.