went out looking for a scrap piece of steel so I can make my notch in the firewall. Also measured the size that I am going to be doing this so my intake will clear and the swap can finally be completed.
Here's the basic schematic that I'm going to be using, it might end up being 6 inches wide instead of 4 though. The tray is gonna be 9 tall by 4 deep by 4 or 6 wide.