Hi all, I purchased a 5speed 2002 GT Convertible with what I believed to have 165k miles on it a while back. Recently, a knock started that appears to be on the bottom end. Only is loud on start up and when reved up. (The assumption is a spun bearing).
Here’s the question as I examined the the motor, it doesn’t appear to be the original(possibly it’s an ‘05 or newer) I probably have to replace and I don’t know if I have to pick up a matching year, or the original because...

2002 GT convertible engine swap