GERMAN SPEC 1983 Porsche 944--DOES NOT RUN

GERMAN SPEC 1983 Porsche 944. Mileage is estimated at around 150k, because the odometer (in Km) stopped at 18k after "rolling over" twice (200,000 Km). Speedometer still works (Km/h). I have owned her since 2005, and have replaced the shocks, struts, bushings, etc. I replaced the clutch in 2010, and only put about 1,000 miles on since. It has the original 2.5L NA (not turbo) engine, but the head gasket was blown. I paid a mechanic fix it, but when he was putting the head back on, he stripped one of the head bolts. He didn't have the tools to fix that, so I gave up. I have all the parts, but the engine is not put back together, and IT DOES NOT RUN. Everything's original, and I have a certificate of origin from Germany. I doubt there are three cars like it in the US. I'm asking $1,600, because it is so rare in the U.S. German VIN WP0ZZZ94ZEN401850 (see photo) could not be accepted by this system.