Nice catch on those turn signal indicators. I believe someone added them as they aren't in the right location. They should be a little more towards the hood.
Here's a somewhat reference...
Are you positive on the location of your turn signal indicators being correct Mike?
Mine look to be similar location to what they are on its "twin" in 2010rt's pix from the cruise.
Here is a picture of my car pre-resto taken in the early 90's. I bought my car restored so I don't know for certain, but AFAIK the car hadn't ever been restored or repainted prior to the previous owner buying it, and had the original front fenders on it. You can see the passenger side indicator and the holes in the drivers side fender for the indicator.
My car was optioned with the light group so it originally came with the fender mounted turn signal indicators.
I noticed that my cars "twin" had a argent gray grill like mine too, R/Ts had black grilles.