A body Front speaker location?

I am going to try something a bit different. I am going to re-engineer my dash to look somewhat like that of an aircraft instrument panel. I intend to increase the height a little and construct a center column that will attach to a center console. My thought is that I will put a pair of bigger speakers in the rear, pointing forward (in the fold-down trunk panel of a fastback '68 'Cuda). Because higher range sounds are more directional, I am thinking of mounting them into the sides of the center column, not flush, but canted somewhat forward. Because I will have a taller dash, I am thinking about mounting a pair of tweeters somewhere in the dash.

Of course, once I start, things might change due to fitment issues. I will begin posting pics as soon as I begin working on the car this winter.