After finishing the mission D.I.V.O.R.C.E. for Louise Cassidy Williams, the player will obtain the Trailer Trash clothes. These are a white tank top and blue jeans, which are very similar to CJ's default attire in GTA San Andreas.
In the missions Soldier, In the Air Tonight, and Kill Phil, the Forellis look like the Hitmen from No Son of Mine in Grand Theft Auto: Liberty City Stories. However, it may just be reused model.
Certain pedestrians will mention Liberty City while talking.
Cholos sometimes say that they'll go see their cousins in San Andreas.