Export brace welded cowl bracket/support question

[rraceme]

Good morning.  I apologize if this question already been answered previously. So as i'm restoring my 1966 gt350. i've been installing a new cowl upper and lower. I'm currently test fitting my aftermarket support/Bracket to hold the evenly spaced hole original export brace. The original support bracket is too rust compromised to reuse.Otherwise, I'd cut it out and use it. Specifically, my question. If you look at my attached pictures, you'll notice that there's a another small hole in the very center of the bracket. It's almost on the center line of the cowl. Additionally, it looks like the Original cowl has a hole drilled in it that somewhat lines up. What is the significance of this hole? That's my actual question. I will duplicate it in the new support bracket I'm installing but what would like to know the purpose of the drilled hole. Thank you for your time fred