Since this is my first post, I thought I would share my system that I've thrown together over the last year or two.
Vehicle - 2018 F150 XLT Sync 3 (basic oem system w/o amplifier)
Amp/DSP - Audison Forza AP8.9 Bit and Audiocontrol LC-1.800
Speakers - Full active 3 way front stage - Helix P 1T tweeters, Focal Flax 3" mids (in custom a-pillars I fabbed myself), Focal K2 6.5" woofers in the front doors and Helix E 6X.2 coaxs in rear doors
Subwoofer - Single 12" Focal K2 Power E 30KX in a custom fabbed enclosure (again made myself)
Wiring - 2/0 welding cable for power and ground, Connection 4 and 8 gauge power wire running from Knukonceptz Konfused distro block to amps, Knukonceptz Ultimate battery terminals, Knukoncepts Krystal Kable RCAs, 4-conducter speedwire
Sound deadening - Hushmat applied to inner and outer door skins and rear wall (more to come this summer)
I am in the process of learning the not so simple ways of "tuning". I have read the Audiofrog writeup multiple times and have put their info to good use. The next step will be purchasing a mic and using REW to do the final adjustments.
Looking forward to learning more and perhaps giving some pointers here on CAJ.