I started driving bob tails almost 60 years ago and I have owned and operated semis for over 50 years. My first semi was a 550 which is the highest HP gas burner built in the 50's. I spend a lot of time in our maintenance shop and do all the parts securement. I have extra 550 grills that are painted. I'm not sure if they are the same. They look the same from a distance. I too am anxious to see pictures.