I can't seem to find a dorman or aftermarket replacement for my 98 navigator. It's a 5.4, but it has the lower intake manifold. The only dormans that I can find don't show an opening in the bottom to mount a lower manifold, and are for 00-06 model years. My stock lower manifold has a plug for an electrical connector or sensor, so I would think I'd have to use that again. Can anyone direct me to the correct intake, please.

I also seem to notice that my intake looks like the one from the 4.6 motor. Could mine have been swapped with a 4.6? I was told by the previous owner that it was a different motor in it from the og one, but could it be smaller? I've included a pic of my intake removed from the car. It still as the lower manifold connected. Thanks in advance for any help you guys can give

 

I think your original motor was replaced with an L motor. sohc cam 5.4

 

actually after checking that's what they came with in 98.