I just got a 20 Trail Boss with Bose, also looking for Bose upgrade options. I did a whole two amp custom box stereo in my 2015 Silverado LT Crew Cab. With the Bose I would like to be less intrusive and get the best upgrade without pulling all the wire for a full aftermarket amp install, etc.
SO far I have seen the GM Kicker and a JBL under console.
This Kicker looks decent and is a little less expensive than the GM Kicker, both 200 watts.
https://www.shopchevyparts.com/electronics/2018-sierra-1500-crew-cab-audio-upgrade-kicker-subwoofer-kit/19303118-p-92297288.html
I am a stereo guy and can do it all from custom box to passive crossovers but I really want to stay close to the Bose ( minimal wire disruption) and get the most upgrade I can starting with lows and then mids and highs if possible.
Also considering a sound processor like below to max what I have:
JL Audio FiX-86 OEM Integration Digital Sound Processor w/ Automatic Time Correction and Digital Equalizer
Appreciate any feedback especially reviews from those who have already upgraded Bose, Thanks!!