I add the following to my initial response. I am under the understanding that we are trying to determine "What this car IS", not what all the (extra) parts and pieces are but with what is seen, trying to determine what parts are original to the car so my amendment is:
*Clearly, this is a 67 by MANY items that are unique only to a 67
*The "used" molding with the studs, if it belongs to the car, is a Coupe or Convertible trunk molding so that would add exterior decor groups on a 67.
*Fastback deck lid moldings only have "end studs", center clips on fastback slide onto rivet/nails.
*Clearly this is NOT a convertible.
*I do agree with Marty, I now see the front bumper guards and a shadow of what looks like EARLY impact strips.
*I am not sure the crossmember has been media blasted or not (looks like it may have) but being "painted" would make it more likely a San Jose example. Everything I see unique to San Jose, matches my SJ coupe.
*I am not sure I agree about other comments on window regulator, could be the sunlight on a rusty part?
*A closer look this morning, the AC case looks to be EARLY type (no "hockey stick" seam).
Deducing the ID of this Mustang by using ONLY parts that may be original to this example:
67 Mustang Coupe, 289 (or inline 6, though much, much less likely) with Auto trans (C4)and factory Select-Aire. Earlier build, Burn Amber w/Exterior Decor, Saddle w/Standard Interior and added Console that includes a factory installed AM radio.