Did it come those colors from the factory? If so, it's most likely a 1 of 1 ! If not, then it looks great this way. My first car was one of these, in Iceberg Blue, with the Mighty 390.
Hi and thanks for asking. The original color was yellow with the paneling wood grain. The previous owner painted over it! Why, I don't know but it was a sin. I plan on painting it light green and having the wood grain placed back on. I love these cars. I do have a second one with the 390. Your blue one must of have been a real gem.