I only changed the start up and idle sounds (they were fairly simple to make and they sound pretty damn good if i do say so myself), i tried making the acceleration and deceleration sounds but they ended up sounding like an 8-bit mario theme song so i trashed them, so if anyone can help me improve the mod please hit me up in the comments.
Installation:
Drag and drop schafter3.awc and schafter3_npc.awc into \update\x64\dlcpacks\mpapartment\dlc.rpf\x64\audio\sfx\dlc_apartment
Credits:
LeoJ20