“While the Omni/Horizon body was based on the European Horizon the domestic chassis was not. It was totally different and engineered in the U.S.” The engineers who developed it believe the main source of both chassis was indeed Europe, even though there were numerous changes for the USA. I didn't know that the 1.7 was from the PA plant (I actually owned a car made there, and met one of the plant engineers who had previously worked for a domestic automaker; he was part of the VW attempt to replace USPS vehicles). I will clarify/correct the article when possible. We're working on that, slowly, but we are working on it.