I have a 03 Mach 1 that is making an engine knock noise. I took it to a shop and all they said was that the noise is coming from the bottom end and that it'll need a new/rebuilt engine. I don't mind doing that, but I don't want to spend the money if I don't need to right now. I don't have room in my garage nor all the tools to pull the engine myself. The car has 117k on it, here is the noise it's making.