Hood blackout question

I'd like to do the same thing to my '71 Dart GT as well, including the cowl area. However, I'm thinking of using high gloss black vs. satin (matte) black.
Does anyone have the actual dimensions of the blackout treatment (including the body color space)?
I've seen some cars with the blackout hood treatment that fits between the the hood's raised body lines, and other hoods where the blackout hood treatment extends outside (past) the hood's raised body lines. Which is correct?
The BLUE Dart above shows the blackout hood treatment extends outside (past) the hood's raised body lines.