I put my LS back to the stock tune & pulled the sub out. The xcal 2 has 4 unlocks left so it can still tune up to 4 cars. The sub is a 15" Memphis M-1 in a box built to allow you to still have enough room in the trunk for a set of golf clubs. Sub is powered by a Direct 1200D with a remote gain for easy adjustment of bass without having to touch the amp. Make me an offer cause all this is just sitting around my office.