GTI on H&R 30mm springs, standard shocks, and BBS VZ (18x8 et44). Tyres are Michelin Supersport 225 40.
Rides nicely, not noticably firmer than stock. I found it quite firm with standard springs anyway.
Less body roll, turn-in feels good, and very stable. The tyres help a lot, they grip really well.
No rubbing at all, no spigots, spacers or bodging required. They bolt straight on (57.1mm centre bore) and use the same oem radius seat bolts.
Aesthetically, an improvement over the original 7.5 et51 Monzas as they poke by about 13mm more and fatten the stance.