Yes.
First of all, The 97 trucks did not have the 700r4 in them. The 1/2 tons had the 4L60E and the 3/4 tons used the 4L80E. Any year 700r4 transmission will work in the 84 as long as it is out of a truck.
No, It is not even close.
Neither the front or rear bumper of a 1989 Chevrolet truck will fit on a 1989 Dodge truck. The bolt patterns are different and will not line up.
Yes
NO.
yes as long as they are both v6s or v8s
YES they are the same.
YES they are the same.
no
Yes they are the same.
Yes, it is all the same.
YES, That would be a direct swop.