Hm, first of all, they should be always added to the strongest ship in your fleet. That is not changeable, but due to some bugs they are anyway useless.
You can only build them on Asuras but i'm not sure if you can build them anywhere else.
'The true nature of a man is decided in the battle between his conscious mind and his sub-conscious. But even your sub-conscious is too strong to resist. The only way to win is to deny it battle.' Shifu, Harcesis. Stargate SG-1 S04E17 - Absolute Power
you can also find 1 in proclarus tonas or what if oyu send o'neill there i have 4 zpm i added them to THor but he does ont seem to have 10 times stronger shields and hull
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