by RickWWW Mon Jun 21, 2010 5:34 am
Steve,
My small amount of research shows that the 300 is definitely not stock. But, if it is a 300, you are in good shape. The 240 apparently had some blow-by issues that were resolved with the 300. Both engines should look pretty much the same. Don't know anything about identification marks. If it is the 300, it means it was swapped in - which would be an improvement over the 240.