I need to replace my speedo gear and am having trouble finding the correct one. Can someone decode this for me off of my broadcast sheet? Besides listing "D7L Speedo Gear" in the options list it has "22GRA" in box 28. I'm assuming that's 22 tooth gray gear? Can someone confirm?

The old one I pulled is orange (discolored from tranny fluid?) and looks to have about 24 - 25 teeth but it's hard to tell because some of the teeth have been chewed off and are missing.

The truck is all original 305, THM200C, 2.73 rear if that helps too.

Thanks!!