TD, you gotta do the bushings, dog bones, toe links to get the true effect.
GMG is the best setup out there right now imo.

 

To the OP, why do you eschew the Bilstein's? I have 'em and couldn't be happier and I've heard from many others who seem to feel the same. I repeatedly read that coilovers provide overall superior performance to springs. So, just curious what changed your mind? Is this something specific to TT cars?
Thanks,
V

 

My customer here is lowered on HnR Springs.

 

Quality lowering springs work well with the PASM struts, whichever you choose I think you'll be satisfied. My only issue with the springs would be lack of adjustability. There is a theoretical concern about less shock travel with springs, but does not the same thing happen with coilovers? As long as it's done in moderation the dampers should be ok.