there's an access panel inside the rear guard of the right rear wheel. remove that and you can access where the filler neck clamps onto the top of the tank as well as the breather lines.
then underneath the car at the front of the tank, you can unclip the wires to the pump and remove the fuel hoses.. (CAUTION!!!! - de-pressurise the fuel system first!!!!!)
once all that has been disconnected, its 3 bolts on 2 straps... (one of the straps clips in on the forward end)
wah lah! installation is the reversal...