LEGO Set 9398-1 4 x 4 Crawler (2012 Technic) | Rebrickable - Build with LEGO
LEGO MOC Mini 9398 crawler (42139 Alternate Model) by technicprojects | Rebrickable - Build with LEGO
Ultimate upgrade for the 9398 4x4 crawler with pendulum steering (no servo needed). I also made a pendulum steering file in the rebrickable link you can download and have a closer look