Heartbeat handle,INT-2643, description says,... " The clear knob was used on all 1968 models without black interior and 1969 models with standard interior only."... This is clearly (no pun intended) inaccurate, wrong information. I know for a fact, all Standard and all Custom 69 interiors, ALL, came with clear knobs. Can't speak for the 68 (not versed as well), but I never parted out a Camaro from the 68-9 model that did not have clear knobs. This is why I asked these questions about these cranks to get a definitive answer.