My father used to have a business making rust repair panels however he was bought out by Rare Spares some years ago. One of the panels he made was the rust repair panel for under the heater bubble on the Escort similar to the image in ausmk2's post above including continuing further up toward the windscreen.
Rare Spares did receive the die for pressing this panel when they purchased the business and equipment, you could contact them and see if the still have it.
I will get dad to check if he has any spare panels in the shed if you are interested.