Would anyone know if there is a way to just look and tell if the final drives are different? I bought the jdm 4.785 final and counted the teeth and there were 66 on the ring. I looked at the teeth in a b16 and usdm type r and there was 66 also. Just wondering if i got screwed. If anyone could help thanks!!

 

you only did half the equation.

devide the ring tooth gear by the pinion gear tooth count

 

dont exactly know what the pinion gear is but there is another gear that came with the kit. It has 42 slanted teeth and underneath it has 39 smaller teeth. Sorry dont really know to much bout tranny's tryin to learn.