Yeah the dynamat is really nice stuff. I wanted to do the roof when I had the headliner out but didn't order it. I would like to do under the carpet.

So pretty much rip out the entire interior. Dynamat everything. Redo the speakers. Run some wires for a backup camera. Mount said backup camera. New head unit, and amplifiers. Nice high end good sounding stuff. Wire everything correctly somehow. I'd like to get started on this I just don't like the idea of losing cargo space or the spare tire for the subwoofer.

I made an order at Crutchfield today. I bought a 4 pack of Kicker 6.5 door speakers.
I have them in my older Lexus RX300 and they rock. Punchy Bass, clear higher notes.
I think they will be unsought of an upgrade to sound better. I would like to add a sub, but these Kicker speakers have really good bass. Since I am rowing my own gears, and higher RPM than my automatic slushbox BMW. should sound good to me.