i have 1 15", im going to get another, and im gonna build a box for them. i have a 96' grand cherokee and i have about 32-34" of room between the spair and the right side of the trunk (width of the back). i am looking to buy a blazer xtreme. i would like to know how much room there is in the back of a blazer xtreme with the spare tire. i would like to know the width, im planning on the box being 32" wide or so. ive noticed that the wheel well sticks out in the blazer xtreme kinda on the side in the back of the rear seats. i just wanna make sure the box would fit up against the back of the rear seat, if not back to the drawing board.