These parts were specifically made for a JJRC Q60 military truck, but should also be compatible with WPL vehicles with leaf spring suspension.
The servo clamp is used to hold the 1171MG servo from Banggood in place. It is also used as a base for ESC and receiver.
The steering rods are replacing the slotted original JJRC rod.
The front cross member is for semeivan's ZIL-131 cab: https://www.thingiverse.com/thing:3318101