I am looking to buy a new OEM 2.5 shortblock. Single overhead cam 2.5 liter non turbo, non egr motor. I am not sure on the original VIN number. Anyone know the difference between subaru part numbers 10103AB190 AND 10103AB390 ? They both seem to fit multiple cars in the 1999-2003 range but the 390 version is about $300 dollars cheaper. The engine is in a VW vanagon which is why I dont know for sure what it is. Thanks for any help.