Here is a used set of Quartermaster ultra duty 10 spline quick change gears. They are set # 9. 19/23 tooth. They are 4.99 ratio with a 4.11 ring and pinion and 5.88 ratio with a 4.86 ring and pinion.  I used these in a vintage dirt race car and they worked good, no issues. No chips or major damage on the teeth, good used condition.

Any questions please ask