Just finished chatting with TWM
Stated that the non-threaded adapter on this page is the correct one for 2016/17 Camaro SS:
https://www.twmperformance.com/shift...t-knob-adapter
It comes with purchase of knob, only works with TWM knobs.
Hopefully this helps - I may be ordering one. They have nice weighted options.
Somewhatdamaged
