I mean, like with the EcoDiesel, the 6.0L PSD and the 6.4L PSD weren't actually products of the respective marques, in the case of the PSD, those were International engines. The 6.4L PSD was the final nail in the coffin for the decades-long relationship between Ford and International, and was what resulted in Ford building the Scorpion 6.7L in-house.