Alright, I think my firewall is probably in good enough shape that I could make the necessary modifications. The A/C firewall is just the same thing as the non-A/C firewall, but with some extra holes, correct? That's what I gather from this.
Yes sir. There is one hole location that is dimpled outward about 3/4 inch. I might can get a pic tomorrow of a standard firewall with the a/c mods drawn on it with a sharpie.