What more input are you looking for?? Folks have chimed in and basically said that it’s worth it in todays car market to have it repaired, provided the rest of the car is sound. I responded and said that the the repairs your car requires are normal for that generation expedition and it’s mileage. Not sure of repair cost because I do all my own work. If looking for parts list, I used new genuine Ford cam phasers, a Cloyes timing chain and guide kit, genuine Ford cast iron ratcheting tensioners and a Melling M360 high volume oil pump. If I were to do it again, I would replace the roller followers also for piece of mind. Purrs like a kitten.