ISO speedo gear for ‘65 904LA tranny

I need the speedo assembly for a 65 Dart 273. It is a 904-LA transmission. Let me know if you have one, please send/post pic. I need the gear, shaft, housing, and retainer. The hole in the trans is 1” and the spline to match up with is in about 1 1/4”. Not sure how many teeth I need to get it right. It is the smaller rear end but I changed the tires from the original 14s to 195/r65/15s. So... I don’t really care if I get the gear tooth count right at this time, unless it has to be a certain one for this trans? I just need one that fits for now to get the beast running and driving for the first time.

Thanks
Jim

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