4-Door with 340 from the factory?

Here is one for you guys. In 73 I was leaving school in my orange swinger. I saw a 71 demon Sizzler orange coming the other way.I had no clue what a Sizzler was then. It made a left in front of me and what I noticed was the orange accessed grille and orange bucket interior. I thought it was ugly with that interior back then. But I can recall it having a orange front bumper. I always talked about this car. There was a lady driving the car and it was going into a area of town that had no outlet.

At the end of last summer I was driving through Northampton sitting in traffic at a light and to my surprise it was coming the other way. I couldn't believe it. It did have a orange bumper and there were no bumper bolts that I could see. It looked like the same lady she had to be in here 90's . I turned around and went looking for her at shopping centers and drove all over. She was gone. It was 318 I could here it was a V8 and stick heard her shift as she went by. Rear wing on the car. This lady must have this car for 51 years. This summer I am knocking on doors in the area where I first saw the car. Well My wife will . They always answer for women. I am determined to find it. I'll get pictures. Hopefully in my driveway.
Keep us posted, PLEASE! I don't remember ever seeing any factory painted or elastomeric bumper a bodies...