3 or 4 speed how to ID

If its a 4 spd car it will likely have the overdrive version of the A833.

Without getting under the car you can tell if its a 4spd by the motion of the shifter. A 3spd will only have gates for the R-1 and 2-3. The 4spd will have another position that is over closer to the driver side and up towards the dash for reverse, it will/should have a heavy spring that you will have to push against to get it into reverse, this is to prevent accidental shifting into reverse when trying to down shift to 1st.