The factory never specified ride height at the fender lip, it was all done under the car at the t-bar socket and ball joint. For what its worth, factory spec says the t-bar socket should be 1.125 inches higher than the ball joint socket, but this will definetly put the nose higher than you want. The reason they never referenced the fender lip is because a change in tire height can alter this point without changing the suspension geometry appreciably.
In your case, there are shorter bumps stops than even the ones Brad showed you. Here is a link to the ones I have under my car that are only .687 tall.
http://www.summitracing.com/parts/ens-9-9102g/overview/What t-bars do you have? If they are stock, you may want to leave a taller unit in there to absorb the hits you'll take and maybe crank it a bit more ride height. If you have stepped up the rates significantly, you can certainly replace them with a shorter unit to avoid the contact. Depends on the t-bar rate, front of the car weight, and road conditions where you'll be driving. If the roads in the Netherlands are anything like the ones I've seen in Switzerland and Germany, they should be pretty nice.
