Just to be clear, 0025 is not the chassis number, but rather the engine number. The chassis number is ZDT874000MA009625.
The history I have on this car is that it was originally sold through the distributor Armin Fischer through his company AHI / Sports Cars GmbH based in Stuttgart, Germany. It was owned by Jorg Sandek of Berlin, Germany and then by the collector, Manfred Zech, also in Germany.