The front will accept most parts that fit a F150 Front. The issue is the Rear.
Hey guys in this video we show you how to replace the differential fluid on a Gen 4 (2018-Present) Ford Expedition. Stay tuned for more videos.
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Take a look at the video or your own Expy. You will notice a SIGNIFICANT issue with lifting the rear. The rear half shaft goes through the rear frame. In order to maintain the correct angle, the pumpkin should be lowered, then if the suspension droops, well, you can guess what would happen. Also, there is the issue of the rear links. You will notice when you put the 3/2 on the rear wheel moved forward. Relatively easily solved with proper links. The real issue is the Frame. It would need to be cut, and reinforced in some way. That is why you haven't seen anything taller for the Rear of anything in the Expeditions for a LONG time.
Custom shop is the only option, and prepare for serious surgery, and VERY deep pockets to do right. It will never go back.
Also, I have seen a 3/2 on the 4th Gen and it does not have a rake. Park on level ground and do some measurements. It is the angles of the body playing tricks on you. That being said, if you want more lift out of the front, pull the 3 Inch puck in the front, and go with Icon's kit. Should be adjustable to get the stance you want. Also the adjustable Bilsteins for the 150 are an option. Search on here, others have used them.
Are you doing this for looks, or function?