What the boys @ Duke Dynamics are doing looks very promising. Just saw these photo's on their website and I thought i should share... Have to say, i love their take on the Z.
Raised Trunk:
Quad diffuser:
And what seem's to be a complete Wide Body Kit for our Z:
Manhart Racing in Germany does a complete engine transplant on the e89 Z4 with the new V8 twin turbo Motor... Now with this Wide Body Kit and that engine swap you can have the closest thing to a street legal GT3