Hemi hood scoop placement

I bit the bullit and bought a bolt on hemi scoop, I pick it up Friday if all goes well. I know the scoop is centered left to right but what is the distance from the back of the scoop to the back of the hood on center? Looks like about 4" from pictures I have seen but would like to be a bit more accurate.
I plan on doing the rattle can paint job in semi gloss black, has anyone done this and what brand worked for ya.
Thanks
AL