Yeah, both are salvaged from the Xbox version of the game.
  Scroll down until you see the M4-78 and droid factory modules (
http://www.team-gizka.org/downloads.html)  
 The modules can't be reached through any normal gameplay, so you'll have to type in the cheat console 
 for M4-78
 warp 801DRO 
 for the HK factory
 warp 298TEL :)