Yes, a 3.2 or 3.5 conversion is possible and has been done. Not quite a bolt in deal, but doable. Tom Vago used to have his own Sebring website and has done the swap. http://tom-viki.com/1C3EL75R62N/engine.html
Have fun as my 2000 was the biggest pain in the ass to work on of any car I have owned.