In case you haven't guessed, I rather enjoy MADHSQUIRREL!!!!! Anyways.... I'm building this for a friend who's winery burned down a couple of months ago. It's going to be box stock with candy paint and his logo on the side. Don't tell him, it's a surprise 🤫.
What is the purpose of the large hole in the firewall with nothing supplied to fill it? Nothing in the instructions nor on the trees. I'm fixing it, I'm curious if there's a purpose for it.