the top disk goes on passenger side, and the bottom disk goes on the drivers side mate, hope that helps 
thats not true mate if you order before 2pm the part will be there the next day if its not on back order then its 5 days, most seat vw and audi places say 3 days just to be safe and so they can sort the stock out but everything does comes next day, just so you know for the future, so now when you order from them you can say "oh and that will be in tomorrow wont it" and they cant say no lol
You loosen the spring to lower.
to lower it