What do you mean by that? Like vendors/dealers? This is just a "used" box.. Guy bought it from ProBox, threw in a JL Audio 10" for a day and then got rid of his truck. The box looks BRAND NEW, in perfect condition.. Haha, he's a college student and needs money.. I'm throwing him an extra $20 just cuz.. Yeah, I got plenty of pics, picture of paperwork and specs and verified online w/ ProBox's specs. Yeeeah buddy.. Yeah, I have been looking at JL Audio, Sundown and your RE subs.. Anything will be a 1000% improvement from what I have (nothing) and what I have had before ($30 box, $60 10", and Kicker 10" Reg Cab Enclosure w/ no airspace in a single cab ford ranger), but I just want a badass looking, reputable brand sub in the Probox, and the same with the amp.. I just realized exactly how little I know about car audio.. I have absolutely no clue what spec sub or amp to get, or what RMSw sub to get and what amplifier I need to get to match the sub.. You'd think "Hey I want a 400watt sub, so need a 400w amp to push it, right?".. Nah, there's a 500w amp at 4ohm per 2 channel, but it's 350w at 2ohm, but it's across 2 channels and not 1, blah blah blah... Goodness gracious!!!!!!