Kirkland Hawkman

Just bought a 2018 GMC SLT and love the truck. My old truck was a 2007 Silverado and I upgraded the stereo with an external 8" sub. The stereo was perfect for me and filled the cab with Bass. I now have the 7 speaker Bose and there is some bass but it sounds like it is all in the front and does not fill the cab. I just bought a sub woofer and it will be installed next week. I got the single JL Audio 8" sub and 500w JL Audio amp. I'm expecting that this will the cab just fine. I don't want to bounce coins on the hood but if there is a good classic rock sound with bass, I want to be able to feel it. I also read about the noise cancellation wire that connects to the Bose sub woofer and my installer said he will remove this if necessary. I read in another forum that the dealer can install a sub and I assume an amp. Is this still the case? I read that hey use kicker and I doubt it is the quality of JL Audio? Thoughts on this?