will a thermostat from a dodge durango with a 318 motor work in a dodge ram 1500 with a 360 motor?

Only way to know for certain is to compare them side-by-side for fitment and then boil the old one in a pot of hot water to ensure it opens like it should at the proper temperature, but why bother going to all that trouble to recycle an old part when you can get a new one so cheaply? As to the rest, I rather doubt headlight assemblies and interior dash will work for different models more than 5 years apart. But again, only way to know for sure, short of having a dealerships computer in front of you, is to compare parts for fitment.