Converting 05 Chrysler Sebring from 2.7 to 3.7

On late models that is a pita. Computers are different. Wiring harnesses are different. Modules are different. That's not riven getting into the mechanical things that change.

Since the car is not popular amongst performance drivers and enthusiasts, I doubt you'll find much info on it. A parts catalog is your best first step after checking online.
Does the old school Hollander interchange cataloging, still exist for late model vehicle(s) ?