Subwoofers in a cruiser mopar

Anyone have an audio system in a mopar that includes a subwoofer or 5 and is a high power system.

What do you run and how did you install it to not be too intrusive in an original dash?

I have been kicking around the idea for awhile installing a high powered system in a 68 valiant. I've been driving a newer Mercedes and now I'm spoiled and I want a system that bumps in the valiant too.

I'm not talking about a weak system for some old *** guitar rock, I'm talking about a heart pacing bass bump that will make the deck lid rattle and knock the license plate off.

Anyone?
If I was doing it, I would fiberglass mold the a pillar to fit a tweeter and the same with the midrange in the kick panel. This way you can always take it back to original if you decide to. As far as radio you can build a console or hide the radio somewhere such as glove box and control it via bluetooth. If all things are hidden it is less likely to draw attention for theft. Subs I would build a sealed box. One, due to size, sealed boxes are normally smaller and the they hit harder (are not as loose sounding). If you feel like you wanted more fill and rear speakers. Then 6 1/2 mid-woofer in the rear deck sealed from the trunk. You have to be careful with deck speakers and subwoofers in the trunk. The pressure of the sub will move the deck speaker cone around and cause distortion. Would not use 6x9 speakers they do not produce correct sound due to the shape.