The short. Fits 2014-2019 GM large SUV under the center console. Good replacement for the factory Bose sub, but requires external amp. I bought the wrong one!! It’s a 300w 10” sub. Part # SB-GM-4GSUVCNSL/10Tw1 The long story. My dumb buy can be benefit you. I bought this at the height of Covid in 2020 from Amazon. I waited 4 years before I got the amp and attempted to install it. I bought the Sub for the SUV, and not the truck!! They are different !! So it’s an open box and I did power it up with my amp to verify my install while I waited for the new, correct stealthbox to show up. It has about 2hrs of use . I can ship it , and it will be in the original box with the original packaging. I’ve never shipped through OfferUp, but it looks like their max packaging size is smaller than this box? If you want it shipped , we can work it out.