8.75 Value?

clinteg said

I want to keep the existing 3rd member i have, but I do have an extra one. I have no idea If it will bolt on or how to identify what it is.

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If you have the center section out, rotate the pinion and on the ring rear the gear ratio is engraved on the ring gear. On the housing itself (with you looking at it and pinion/yoke is to your left) you will see either 741,742, or 489.