I have a new addition to the family: I have a (new to me) 1981 BJ42 imported from Italy. I bought it from Missouri, so not involved in the importing. I would like to know when it was built and is it an 81 or 82 model. Vin is: BJ4200901353. When I look up compatibility buying parts there is no 81 BJ42 with a 3.4L engine (3B) listed, I haver to go to a 1982 to get the right engine combination. Can anyone shed light on this? I would like to know the month of production and is it an 81 or 82 model. Thanks!