LEGO MOC Ultimate MK2 4x4 Crawler 9398 Upgrade by Cyborg-Samurai | Rebrickable - Build with LEGO
LEGO MOC COOLER 9398 4X4 CRAWLER by Pruisisch Blauw | Rebrickable - Build with LEGO
LEGO Set Technic 4X4 Offroader 9398 NEW Parts 1327 - Etsy Denmark
Amazon.com: LEGO Technic 9398 Rock Crawler : Lego: Toys & Games
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