TH 400 speedometer question

I have a Turbo 400 in my '72 Skylark that was "race prepped". Manual shift, loose converter and such...blah, blah. The blah, blah is the unknown as I didn't have the work done and inherited it with the car. I was looking to connect my speedometer and got underneath the car to see what I'd be dealing with and was presented with this block off plate.



Kind of the same as the above?


My question that I'm seeking answers to would be how to make the speedometer operational.



Would this kit be comprehensive enough to get my speedometer operating or could I still be missing some "stuff" for the speedometer to work? I'll pop the cover off and see if there's a gear on the tailshaft before pulling off the tailshaft housing and save myself a lot of fluid loss



I'm assuming the gray gear in the image with all of the speedometer gears is the same as the green gear in the above image? As long as the gray gear and speedo driven gear match, I can match up the gear ratios and tire size and get a reasonably accurate speedometer?

Looks like I can just remove the tailshaft and install all this stuff?

 

I have no idea the answer but am curious to know, too.

On the fluid loss, If you raise the back higher than the front, it may minimize the fluid loss when removing the tail housing... just a thought.

 

Yes. You may have to find the drive gear clip if it is not supplied with the drive gear/kit.
The driven gear and housing kit will have everything else you need.

It's about 1/2 hour to an hour from wheels off the floor to test driving.
If you can change an oil filter and spark plugs, you can do this.

 

That’s just a freeze plug to block off the opening for the speedo.

You will need the clip that holds the gear to the output shaft, the bolt and clip that holds the housing in the trans, the o ring around the housing, and the correct gears.