I'm looking to lower my 1.3 Golf, however I have a few questions (I've phoned up a few local garages but I've just been even more confused

) I've got some 15'' BBS RA wheels and standard suspension/springs at the moment.
I've been told that GTI Golfs sit 20mm lower than standard Golfs, and so I assume that 40mm lowering springs for a GTI would drop my car 60mm? My question is is this too much for just springs/dampeners or will I need to do something else? Any advice at all is much appreciated and if anyone can correct me if I'm wrong that'd also be great

Thanks
Also sorry if I'm asking questions that have been answered a hundred times, I just don't want to wreck my pride and joy
