Vin tag decode help please

The butterscotch is a pretty rare color. (Bahama yellow on a plymouth, i think still in 71). Other than a very few mid eighties dodge trucks, i think a two year only color, 69 and 71. It is an acquired taste.
My friend and i have a standing bet: will we see more butterscotch cars or a66's like hers, at spring/fall flings. She has been winning last few years..... one or two el5 at most, no real a66.
I would definitely keep the original colors on that car, but then i have a bahama yellow runner with a black hood, i may be a bit prejudiced.

IDK what a “A66” is.
EL5 = Butterscotch correct?
I’m not a numbers guy. I have a 99.9% chance of never doing a restoration. If the vehicle doesn’t have the original drivetrain, I won’t do it. Close enough (date coded) isn’t good enough. For others it maybe fine and I’m OK with it, but not for me, for myself, my car it isn’t.

I am definitely keeping the original colors on that car!
Like I said earlier, how many original colors like this do you see on cars these days. Many people will change the color of the car to suite. I’m cool with that, no doubt. But I like the color and as well for its rarely seen aspect.