hey folks, just saying waddup. i'm just doing some research as i'm swapping out the crap speakers in my 2008 mazda3 hatch. so far i've put in focal 165ca1's in the rear doors that i'm running off the headunit. i have 165a1's for the front components that i was going to run off a us amps xt800.2 but have recently decided to put in an 8" sub that will fit into a stealth box in the tire jack compartment. so i'm just doing some research on which 8" sub to go with and looking for a 4-channel amp to power the sub and the front components. btw, if anyone is interested in buying a brand new in box us amps xt800.2 let me know.