sheetmetal cut from a parts car

Here is a few pic's of the difference between the AC & Non AC firewall and fan motor.
Fan motors are a different size and the holes in the firewall are different
for the different air box's. These are pictures of 67-69 but I would guess
they would be the same for later years.
First 2 pictures are 69 non AC.
3rd & 4th pictures are 67 with AC.
Sorry none of this stuff is cleaned up hope the pictures are good enough you can make out some of the differences.