Okay, I drive a 1981 Ford Crown Vic, and I have a huge trunk. I am wanting to upgrade my Digital Designs 2515a to something a bit louder. I have 1200 RMS @ 2 ohms I can give one of these b!tches. It will go in a big a$$ ported box, size is not an issue. I love my Digital Designs 2515A, it is sexy and pretty loud, I am just wanting something a bit better now. Right now my DD2515a is in 4.26 cubic ft. [Tuned to 36 hz 65.875 Square Inches port Will be powered by two Directed 750d Strapped [1200 @ 2 ohm] I may upgrade soon, I am wondering how much would be a fair price to sell these for on eBay, one is in kind of rough physical shape though. I am thinking something around 1500 watts or 2000. Sound Splinter RL-P18 Digital Designs DD3515D [i really liked my 2515a subwoofer] I don't even know price of this woofer? Elemental Designs 13Av.2 [Kind of skeptical on this, and I want a 15" instead of a 12", this sub doesn't look to bad, but eD has pretty chitty business practices from what I have heard. Besides it doesn't really stack up w/ some of these subs] TC Sounds 15" TC-2000 Fi BL15 throw Audio Que on the list too. For the enclosure I can give it about 10 cubes max in the trunk and still be able to mount my spare tire Unsure if I want to go down to a crazy low tune (29-30) or if I want to put it up about 35. I know the RL-P18 is said to be great in big ass vented enclosures w/ low tunes. Sound deadened everything almost, 1 door is left along with the roof. eDead/Second Skin Sludge combo. 5 layers of eDead in the trunk w/ a thickass layer of Sludge over the top. Floors inside the car have 2 layers of eDead. I need to get some more sludge or spectrum spray.