I have a 2000 expedition 5.4 l 4x4. I wanted to replace the engine, mine has 215,000 miles on it in. Wondered if a lightning 5.4 l engine would be able to swap and how would it do towing about 5000 pound trailer. I am not wanting a race vehicle, I use mine for hunting and pull a trailer. In Arizona we have some 6% grades to climb. Thanks for your input.