can I replace my 5 speed auto with a 5 speed standard
It would be cheaper to stick with the automatic, trying to put in a standard in a car that has been an automatic can get involved, not only do you have to replace the pedal tree there is all of the electronics, wiring, trans switches that have to be replaced as well. If you are still intent on going this route you would be better off buying a donor car from a wrecking yard and then do the transfer from the donor car.
Short answer is: NO
It's possible, but very expensive to switch everything over.
Looking for a Used Fusion in your area?
CarGurus has 59,454 nationwide Fusion listings starting at $2,300.
Search Ford Fusion Questions
Ford Fusion Experts