Goals:
Tighter, cleaner, Lows.
Cleaner, brighter, mids-highs.
No changes to interior and dash.
I suppose I am wondering if here are plug-in modules/harnesses for adding amps, crossovers, etc.
My old Nak front-end separates w/ Kef rears were an amazing combo. Pretty sure wasn't running more than 300 total amps either.