Nice, I really like that coupe!!  Yeah the Z4 are decent little cars.  I use mine as a city get-around quick car.  Very difficult to find a manual transmission these days.

My new Z,  

We have had 5 different E85's I think. We are down to one now. A 2007 Z4 3.0Si. We had a red 2006 M roadster at one point with the S54 motor. While it was really fast, the 3.0Si is nicer to drive at a moderate pace.

Did you made those doors yourself or you bought them? Whats the name of this kit?