How to identify a close ratio to wide ratio 833

I have an early 66 to 67 4 spd I was wondering how I can tell what ratio trans it is. I'm running a 3.08 rear so it tends to buck in 1st and 2nd at low speeds.
have to remove side cover, count teeth on cluster and input shaft. also count teeth on first gear and cluster shaft. this is how mopar suggest correct ratio answers. main shaft, is 2.66 set, 24 0n input, 29=3rd, 34=2nd,35= 1st.3.09 set, 22 input, 27= 3rd,32=1st. hope this helps.