The body mounts should be the same. The harnesses will need to be swapped to the 97 versions. The transmission harness is part of the engine harness, it shouldn't even be strapped to the body for stability except maybe right at the top of the transmission tunnel.
Also, you will probably need to keep the hood springs from the 2001 cab, the mounts changed between model years. Some changes occurred on the hood mount, I think a single change occurred to the body mounting side of the spring. Made getting replacements for my truck a pain.
The steering column will probably need to be swapped to the 97 version as well.