I know what you mean. I've gotten the same reaction when I've been asked what tranny I'm going to be using (I'm also going to use the 200-4R).
I even got that reaction one time when asked what color the engine is going to be! Not all Mopar engines have to be Hemi orange. My paint is going to be Viper Red and orange is just going to wash out against it.
Like you, I'm building my car for me - not the rest of the world.