Only if you have 16 inch rims that fit the Durango. You can not put 16 inch tires on 15 inch rims.
yes
it is not recommended.
I am trying to put 17" tires on my 1998 ext cab V8 dodge Dakota is it possable with a 2 or 3" body lift?
Yes
Yes.
Not with out major modifications.
yes
No, it will not interchange.
i think the biggest are 235/75 15 but if you stay at 225 70 15 its better
Yes
yes, you can put even bigger tires on if you would like. there is a lot of clearence in the wheel wells.