Your basing an SUV with two 15" MT's against a trunked sedan with a single 15 in a box tuned at 35hz and 50 sqin of port, lol. You have how much port area, big bank of batteries not to mention a wide open cabin area! If you also notice I am playing through the seats, umm are you, hell naww. I am not guaging loudness by the amount of flex my box is tuned to 40 hz and peaks in car at 38hz and when you are loud enough then you would never be able to hide your flex from any camera, fact! 36hz that truck should be flexing like mad and the back window almost falling apart, those vehicles are famous for it. Also by saying your voltage is dipping that low also cannot be true because Kickers go into protect at around 11.9-12V not to mention that if I was you I would be embarrased to say I am a team member, learned nothing and with over 5K I am running a stock alt with truck batteries, LMFAO. One other thing, you sure that box is tuned that low, sure looks to me that you have two 6" home made wanna be TCAB flares per sub, those tubes would have to be pretty dam long to be tuned that low unless it is in the 40's and in vehicle is 36 maybe? Yepp, stay here right here where you belong, CarAudio.com ... //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif