OZ Alloys (old ones need a new home)

Just fitted a set if 17" Oz Superleggeras to my 166. They look beautiful, but now she needs dropping slightly. Always something else to do isn't there! Any advice on the best way to do this? I have seen Eibach sports springs that will drop the car ~ 30mm. Is it OK to do this with the standard dampers, or do I now need to lash out on a set of adjustable coil overs? When she's sitting right I will post some pix
Cheers
Nath

P.S. I now have a complete set of 5 standard 166 alloys going spare. They are in pretty good nick, they have done 50k miles. I want around £350 for them (or £300 and a steel space saver type spare).

Hey, hows it going, my 2.5 has been lowered and have to work very carefully with those speed humps. Make sure tyre pressures are up all the time. Previous owner had it done not sure how low it has gone from original though? How much do you want for the space saver as I have an LPG system and would like to keep my spare wheel out of the vehicle to regain a bit of space and less weight. Thanks