For sale is an AeroConversion (product line of Sonex) Throttle Quadrant ST with mixture control mounting plate for optionally mounting a mixture control:

As pictured, the quadrant has a larger friction control knob that I added.  The original, smaller knob will be included, too.  The mixture mounting plate shown in the last picture can be mounted to the quadrant using the same mounting holes for a neat installation.  If a mixture control is used with the plate, you'd likely have to use the original, smaller knob for improved clearance.

The quadrant is in excellent - almost same as new - condition.  The throttle cable can be mounted in the hole above the friction knob pivot for conventional push-pull operation that most carbs require.  If your carb requires a reverse push-pull, such as the AeroConversion AeroInjector, mounting the cable in the hole below the friction knob pivot provides reverse operation.

$55 + $10 Priority Mail Shipping in the continental US.  Any questions or to purchase, send me a forum private message or email me directly at "john at jaustinmd dot com" .