Where can I get these gears?

[ProjectK-10]

I have run into a problem, my speedometer cable broke, so I am going to replace it. But the speedo has never read correctly in the first place, so I am going to put in the correct gears. I have a np205 t-case and the speedo gears are Stewart Warner on the t-case! I have no part number or anything. My drive gear(s) is 12 tooth and my driven gear is 19. Anyone run into this on their t-cases or is this an aftermarket thing I have? I am willing to swap it out for something stock just as long as I can get what I need to get my speedo working again. Thanks in advance!