DaveC:

Ferry Porsche's 73 RS had no ducktail.  It was a light metallic green if memory serves.  There are different approaches to similar goals. 

One interesting piece of trivia about the 73RS ducktail:  It actually made the car faster in a straight line (reduced drag as well as lift), unlike GT3 wing...


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73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 16 Cayman GT4, 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550, 79 635CSi