more room in the front for it. not sure why they would do that unless there is an issue with the dog bones on earlier ones.
you mean for the valve covers being reversed ? if so , one valve cover has the PCV the other has the crankcase vent that goes to the air intake boot. So now the PCV is all the down in the back, the breather is about the same distance other side now. wait those are the valve covers for the 3.4L the upper intake is the only part added. so there should not be a clearance issue, unless closing the hood.