The longer the sound wave (lower frequency) the less directional it is.
Positioning is still important to avoid cancellation but they don't need to face you directly for you to get the full effect of them.
Thanks for pointing that out. Because these will play midbass (80hz-250hz) I was concerned mostly about hitting the correct volumes in the kicks. My 2nd priority was having enough room. Since I have 6-speed, it was more of a challenge. My left foot will have to get used to the smaller space, but it's do-able. And because I don't necessarily need to point these as sub frequencies are omni directional, I was able to get away with having a woofer pointed directly at my foot. If I had tweeters up on the a-pillar, i'd be forced to point these woofers towards my face. So you see my dilemma. However, if I had more room up on the dash, I would opt for a 4" wideband instead.
The wideband speakers up top will be playing 250hz-20k. Some opt for a tweeter, but I personally wanted to simplify my wiring, amp selection, room up on the A-pillars so I decided against it. The amps I'm running are in the spare tire well which nicely fits a 4 channel (midbass/wideband) and another for a subwoofer (probably opt for a JLW6 or AudioFrog 10"). Both seem to be OK with minimal volume (~.25^3 foot).
Funny thing, but since the wideband speakers are on axis (pointed directly to my ears, I don't have to turn up the sound very high. Also, I have plenty of midbass coming from a single kick. I don't foresee the amps ever being stressed by seeing a heap of power required by the speakers. I am still considering a 12" sub over a 10" so I can get lower output at the bottom end. For now, I've settled on a sealed enclosure that'll be fixed to the driver side cubby/cutout.
Must say. The kick looks like shit
It's functional though. I swear. I'll sand the hell out of it followed by bondo to hide all the ugly. Lucky for me, only 1/4 of it is actually visible.