New TQ install question

I am installing a new TQ at the same time as my 340. How much Trans fluid does this thing need before i install it? And do I even have to add trans fluid?
Makes sense that I do.
Also..since the 340 is internally balanced...and the harmonic balancer is neutral balanced..should I assume the TQ does NOT need to be balanced also? There are no weights on the outside. Its a Hughes Street Master 2200-2500 stall. You guys have help this far. I also marked 2 of the flexplate to TQ bolts so I have the right bolt pattern.
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