put these csa and fxt files on your android/data/com.rockstargames.gtasa
open txdfucker and open gta3.txt then import billi.txd then save, then open img tool or alcis special img editor
and open gta3.img then import billi.dff (Do the same with katana)

to start the mission go to the factory (CS) near san fierro airport, if you can't find the factory just open Map image included in this mod

NOTE: This is not my mod! it is created by TheSilentSaw and was only converted by GtaModder for Android Users