Will a 2.5L engine out of a 2000 dodge stratus fit in a 2001 chrysler sebring?
No, they are not interchangeable.
What engine will have the same wiring harness and motor mounts as the 2.7L out of a 2002 Chrysler Sebring?
Just go to a junkyard and ask for a 6G73 Manual Transmission. This transmission was used on the Chrysler Cirrus, Dodge Avenger, Chrysler Sebring, Dodge Stratus and the Mitsubishi Diamente. I'm not 100% sure if all of them had a 6g73 manual transmission available but im sure that most of them used it