tahoe limited rear drum size??

[caxes]

Just FYI, I have a 98 Tahoe LT, 4 door , 2wd , checked the RPO codes on the sticker in my glove box and it shows JB5. Im looking into a rear drum to disc conversion kit and I also had to verify this information. Took my drums off as well and measured the inside diameter and it was almost exactly 10in. Hope this helps.