[dragracerray]

Josh,
I have had several cars where I screwed a plate to the firewall to plug the heater core hole. Has never been a problem. You have gone a little farther. I would send this picture to your Division office for their opinion. If you don't get the answer you want go to the National office. Ray

Terry I see a drivers side fender to firewall bolt and a passenger side fender to firewall bolt. I also see a drivers side vertical bolt fender to cowl panel and a passenger side vertical bolt fender to cowl panel.