How complete do engines come when ordered with these part numbers?
The emission compliance of an engine is the entire assembly - plenum, ecu etc etc. Obviously anything that can alter emmissions.
2002-2004 could be the same part number as far as base engine assembly goes, but if they are not complete, then the extra parts would also need to be checked to see if they remained the same as well.
Mind you just showing the same part numbers for base engine assembly could be enough for some engineers, unless they are really on the ball.
Or if I'm rambling just ignore me...
