I had the same motor on a 1984 350v Ranger and I put a set of XR6 carbs on it. Worked great with the idle air adjustment. There is a chart showing stock sizes for everything on your carbs. Should be able to find in a search.
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD