Clip-On links for pickup body with Light Weight roll cage (MyRCCar MTC)

The original links for MTC pickup body are not easy to install/remove and need to print in TPU to act as damping. So I designed a better link system to work with my simple roll cage (https://www.thingiverse.com/thing:3118459). I want the links could be print in PLA but also have damping ability to protect the pickup truck body in crash or roll over. Also the case should be easy to installed or removed without tools.

I made a snap on structure with springs. When the impact happened, the spring