Well, my Z3 ownership has come to an end so thought it best to wrap this thread up for the benfit of any one that might stumble across it in the future.
Would I buy a Z3 again?
Yes, it is a marvellous car. It is reasonably comfortable and handles superbly with a few mods. I only sold it because I wanted something more track focused.
Best mod?
BY FAR, the Eibach springs. Out of all the modifications I made to the suspension it easily made the single biggest difference. The bilstein B8's did make things better but 90% of the improvement was made by the springs.
The best zroadster forum?
.ORG of course!!!!!!
I'll be keeping an eye on the forum, if any good cruises come up I'll be sure to come (if I'm allowed!!).