Isn't the ride height to do with the springs rather than the dampers?
As said fsd's with eibach springs are highly recomended for the mk2 not sure about the mk1.
I currently have an unused set I'm about to sell along with eibach pro kit springs. Bought them for the leon but decided against fitting as I don't intend on keeping it as long as I originally planned.
The way I see it, a 30mm spring (for example) is designed to drop a car 30mm from it's standard ride height. If you fit shocks that sit the car slightly higher than standard (which the FSDs apparently do on the A3/S3 at least) then you're not gonna get the 30mm drop that the springs were designed for.