Not sure if you've got these yet but I have these on my 1.8t and the drop looks like this....
When I brought the GTI it had coilovers on, the rears had seized and the fronts were not much better so brought these as a stop gap and have them with the standard struts, however I've been impressed and they've stayed on, and I won't be changing them yet! The ride is on the firm side but I also have 18s fitted. There is very little body roll and the car sits well on the road and corners and handles much better than it did, and better than the 2.0 I had on standard struts and springs previously.
For the price I've been impressed and have put about 4000 miles on them in 5 months so they're well bedded in!