New in box. Bought for the 2017 Silverado I had. Up to you to check part numbers for fit.
I paid $170 will sell for $125 shipped. I am posting these else where also please send me PM
I bought mine new here. About what used ones run.
https://www.shopchevyparts.com/electronics/2014-silverado-1500-crew-cab-audio-upgrade-kickerreg-200-watt-amplifier-and-subwoofer-system/19303117-p-92279776.html
Get a Range to deactivate V4 mode and delete the resonator.
I had my muffler swapped out to a single/dual out Borla ProXS. and cut the flapper and resonator off.