hey still kinda new to the forum but have owned my 2002 denali since feb have done the normal stuff like hids in the lows and fogs installed a dvd headunit and now just got my denali back from the shop after they inatlled the smart start remote start system i got for christmas and the technology we have now is rediculious that i can now start my vehicle from anywhere i have cell signal its cool but after all this rant i was wondering if anyone knows where to get a speaker box for the rear that allows me to put a 12 in the spot of the original i see they make a box for a ten but i need 1.5 cubic feet of air space and was wondering what else i should do it only has 97k on it