While the M4-78 Enhancement Project is fully compatible with the up-to-date version of TSLRCM, Staniewicz does not consider it to be part of the scope for TSLRCM, as there is very little dialogue relevant to the M4-78 area left in the code. Although TSLRCM team members used model assets that were left in game files and some plot points are based on what team members were able to recover from game dialog files, a significant amount of original content had to be created to flesh out the story arc for the M4-78 area. New voice overs were recorded for the original dialogue of the M4-78 project, while TSLRCM utilizes unused audio files left in the code. For example, Obsidian lead programmer Adam Brennecke voices a character on the planet M4-78EP, although the mod is not officially endorsed by Obsidian.
