66 Dart GT HT Whatsitgonnabe?

I think what I was trying to say was that there has never been an orange engine in a '66 Dart and the LA360 has only ever been blue.
I agree.

I've been going over color schemes a whole lot in my head and I've been planning on painting the engine and the brake calipers Mopar Blue. The problem is that I'm pretty certain now that I will be painting the car either Petty blue or Volvo Rebel blue (Polestar blue). They're pretty similar.

Either way, a blue engine bay with a different hue of blue engine is not going to look good.
I agree here as well. Funny you should be considering a red engine in a "Petty" blue car. I went around on this one, too. I have a 72 Demon that is kind of an "improved" tribute to a car I had in 1972. The engine in the current car is from a '68 Coronet, which I rebuilt and painted red.

Rather than use the TB3 "Basin Street Blue" as my original had been, I went with the Ford J code "Grabber Blue". I did not make this change lightly. I carried gas caps painted with TB3 and J into Petty's museum to compare with the race cars. J was closer.

Attached are some photos of my Demon with a red motor. Lighting really makes the J code paint "flop".