I forgot where I saw this at, but a magazine was modding a 1.8t gti and it already had bilstein suspension and they changed it out to put on coilovers(I think they were neuspeed.)The 1/4 mile time for the old suspenion setup was 14.5 and then with the coilovers 14.3.

You can get new coilovers off vortex for 800 shipped. I'll search the whoretex for those coils.