When upgrading air conditioning in these Lincolns it is a requirement to remove all of the original system; once you do that you will find a large hole. Our firewall will go directly in place and spot weld to the original metal just as OEM would. We provide you with the proper mounts for Restomod’s Haymaker AC system already welded in. There is no need to drill out holes in our panel for spot welds as we went ahead and placed those evenly throughout the panel for you too. Don’t know how to weld, no big deal, the spot weld holes can give you a nice pattern to drill into your OEM firewall and bolt our new piece in place.