I have fixed all the TCU related issues on my A6 2.8l which sustained water damage.
The car starts but won't move when in drive position, although the engine noise change slightly due to the load increase when in drive.

If I am to rebuild (labor is cheap) then what kit or parts should I "must" get? Need to preoder these parts. I might as well rebuild all major parts if I am to bring it down.

Alternatively, I may just but a used trany and just replace the whole thing.

Thanks