I got an 01 sebring convertible and was wondering if the coupe/sedan body pieces(specifically the rear bumper) would go on the convertible? If possible one could use stratus pieces on their sebring,
and If not would it be possible to modify the clips and stuff to fit or are they all totally different sizes?

 

The convertible and sedan are quite different. If you just look at them side by side you will see. About the only body parts that are the same are the hood and headlights. Suspension parts are interchangeable for the most part.