A/C to non A/C change

moparmat2000 said

The actual sheetmetal stamping is the same AC to non AC the difference is where the holes are all pressed in it. I will get you pix of my non AC firewall tomorrow.

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I have a 68 barracuda non a/c and that it what I cut the blower mounting out of. it looked like to me that the heater hose holes are located in the same area on both and the only difference that I could was the blower hole being larger for the a/c. With that being said that is why I thought I could just insert the non a/c mounting into the a/c mounting hole and the non a/c box would fit accordingly, if i am wrong please let me know.