the back sway bar bushing,rattle & bang the whole time you are driving the car,

it could be,but I'm just going by what the dodge dealer thought it was,how much is that to replace please??and is it dangerous to drive like this?

its about a $50 part.list price at a dealer,about $90.since the dealer has had eyes on it i would go with thier reccomendation and as far as dangerous,well,anytime suspension components wear theres a risk especially driving around corners at higher speeds.