Power wire gauge through firewall?

Nillaz

Hey guys I had to replace my original Z and need to install another audio system. While I was planning out the setup/wire runs I forgot to take into account the gauge of the power wire through the firewall for my amp.

I spec'd it with a 4ga kit but can anyone tell me definitively if this will fit through the grommet in the firewall behind the battery? It's been two years since I last had to do this and can't for the life of me remember what I ran last time. I just perused the install videos as a refresher and I'm sure it's listed in there somewhere but I must have missed it. I suspect I should be OK but confirmation would give me some peace of mind. If it's not going to fit I'll order another amp kit immediately.

Thanks!