Ok well youll need some planks of wood to raise it.....depending how high you want it depends on the wood....you want a 2" raise a 2x1 will be fine...then most people use MDF or plywood would work....now measure from the back of the seats to the edge of the boot... then cut the 2x1 about 2" less...you will need atleast 2 of these but 4 would be better....then cut the plywood or mdf to the size and shape of the boot, if you want a amp under it (which i presume you do) then cut a hole for the amp....now....nail the 2x1s evenly on the underside of the ply or mdf....and the cover with what ever you want...and screw the amp in underneith and slide the whole thing in....not sure if that helped....so heres a diagram of undernieth it (bit you wont see)