Since cruise/speed control is most common on the C-Body models, I have come to you for help. I have several later model speed control levers and I am trying to confirm the applications. I thought the straight arm lever was for tilt and the angled arm lever was for non-tilt. Well, I got mixed results when I posted on Facebook. I plan on selling all the levers. The part number for angled arm unit is 3746 518, the straight arm unit is no longer tagged. Any thoughts?