since you bottomed out its most likely in the suspension/wheels, especially since its fwd with no drive shaft going to the back, unless you hit so hard you rattled the engine and fucked up something in there
any idea where the sound is coming from? passenger side, driver side, front, back? try and do some tests so you can get an idea what it is such as not moving and reving the engine, and coasting and turning in neutral would help give you a general idea of what it could be