Idk if this is accepted on this sub, but there is a ton of technic underneath, namely rear suspension, front pendular axle, remote controlled drive and steering (with working fake engine and
LEGO Technic axles and chassis – FT-creations
Amazon.com: LEGO Technic 9398 Rock Crawler : Toys & Games
LEGO Technic Solid 4WD Chassis + Front Steering + Rear Differential - new parts | eBay
LEGO Technic axles and chassis – FT-creations
Free Building Instructions – Nico71's Technic Creations