I know that this is not a jk question , but I am in the process of building a 2.5 litre engine to put in to 1999 TJ and when I went to install the crank shaft the oil passage from #2 main journal that should go to #2 rod journal was not drilled. this engine ran for 11 years and it would still be running if wasn't for piston slap. just woundering if anyone out there has come across this in there travels.