[Buzz]

Absolutely beautiful craftsmanship - by all indications, this is going to be one incredible Cobra! Please keep posting updates!!
As far as the beef in the door frames is concerned, the dividends will be paid mostly in door/body structural integrity and rigidity - no sagging doors and less chance of rattles. Given the dimensions and design constraints of an accurate appearing Cobra, there's not much you can do to have any meaningful side impact protection unless you plan on being broadsided by a 90lb environmentalist on a Segway.