well i am about 12 days away from coming home from deployment which m happy for because i get to come home to my wife kids and mustang lol...but just last week my wife told me our 03 expedition has a knocking sound coming from the engine...and the other day she sent a video and it sound horrible...i need to get it fixed when i get home if i can but i want to see if anyone one knows of a good machine shop or someone thats good with mod motors and is reasonably priced in the SD area. any help would be appreciated