Now you know why there will be no Mustang with a 5.9 liter engine named the 599 GTB

In the early 1960's Peugeot sued Porsche for Porsche wanting to market the original 911 as the 901.

Peugeot won, claiming that 3 digit model numbers with a zero in between for production cars was part of their trademark portfolio.

But that could not stop Porsche from using 904, 9067, 908 for their race cars or for 911 parts.

A Ferrari F150 model designation could harm Ford. No potential Ford buyer wants to think that his truck may requiore Ferrari priced parts!