Ftech Torpedo Question

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I'm currently using this code to make phased torpedoes:

Code: [Select]

try:
sYieldName = ?Phased Torpedo?
import FoundationTech
try:
oYield = FoundationTech.oTechs[sYieldName]
FoundationTech.dYields[__name__] = oYield
except:
pass
except:
pass

Is there anyway of altering this to include a list of ships that are immune to it or attach something to the ship file?