Fazz. If you haven't yet got the flaps for the GTD,the item No's are:-
Front 5K0 075 111
Rear 5K0 075 105 (my box stated Gti, so they must be the same!)
Fitted them recently....
All screws etc are included, but you will need a couple of Torx bits 20 and 25 IIRC. a pair of grips (adjustable pipe grips are just the thing!) to tighten the clamps on the front flaps (with something to put between the grips and the bodywork so as not to damage paint etc) small extension for the torx bits for the rear flaps, a 10mm spanner and some tape to hold the - nut in the spanner under the bodywork front n rear/20mm torx screws to the bit whilst getting them in the recess on the rear flaps. Also, either a rubber headed hammer or a hammer + piece of wood to get the clamps on the rear flaps (with the inside of your knee up against the rear valence whilst you smack those clamps in! Ooh Matron...

)
Fronts - can be done whilst car on the ground with opposite lock applied (bit fiddly, but not too bad).
Rears - really need to remove each rear wheel in turn.
If you're going to jack the car up and remove a wheel, then
Don't forget to use an axle stand or similar for safety's sake!!! There's nothing quite like a car falling on your head to put a damper on your afternoon!