Weight amounts for a 360..

Hard to find a straight answer on the internet or here on how much and where..

I have a rebuilt 360...no real info on it except for it's cam. I have an a727 and an performance econ torque converter pus a flex plate. The 727 has been rebuilt and the torque converter is new.

None of this has been together.

It looks like the flex plate bolts to the torque converter. The PO filled the converter so more AT fluid has to go in..

So, how much weight do I need to buy and where do I put it ?

Thanks
ian.