[coolhandcountry]

On some motor mounts. You can bottom the motor out in mount and not have enough movement. As far as gearing goes. 70 spur with 11 pinion is a 6.36 to 1 ratio. If you run the 76 spur with 12 tooth pinion is a 6.33 to 1 ratio. If your motor mount can let the motor move stay with the 70 tooth. It is very little difference in ratios.