The Z4 GT3 is one bad ass car. Last time I looked you could buy one for 360,000 euro. ~2700 lb. 4.4 liter V8. I believe 4 finished in the top 10 in Nurburgring 24hr. (didnt double check)
BMW has stated they have gotten absolutely every thing out of the current M3 and would like to go to the Z4 GT3. This change is a good thing! This is the first car I would buy if I had $400,000+ laying around..........