Firewall interchange for 73 Charger

[73chargersesun]

I was wondering what lower firewalls interchange on a 73 Charger se. I need to replace mine.I was looking at new lower reproduction of a challenger non-ac looks the same but I don't know if the vents are the same .I was also looking at the side panels too.My air vent rings are rotted out and need a complete replacement where the rings are.And where the front inner fender are usually spot welded on the are rotted threw.All the damage was done on the rear fender portion of the fenders where the drains are.It is an original sunroof car in need of tlc.