well if they did it would not be considered concours correct as is the focus of this forum. go with the strip caulk as suggested.
+1 Easier to work with - though you'll get you hands or gloves dirty making one strip from multiple ones. Other produces are normally thinner in consistency so they will run out over any opening causing drips that would not be original and create more work. On the 71-73 typically none will be visible from the engine compartment side
For others make sure you choose the right color for your year and plant. NPD product (the light gray) is a copy of the service replacement stuff Ford sold during the 80's (shown below)
Ford service chalking - 1980's