Where do you get the parts for the HK droid on your ship in KotOR 2?

You find the parts in various places on the different places, for example offen on a hk droid after you kill it, on nar shaddaa, look for the mechanic in the dock, then talk to the droid, complete the quest and then make it give you parts, also alot of droid parts sellers will have 1-2 parts to sell, although all repairing the droid does is give you a new party member