I did a search on Mud and found a part number for wheel studs from NAPA, 641-1628. Everything I can find for a 1976 FJ40 says I should have a 14.22mm knurl. When I pulled mine, I measure 13.88 on the old one, and 14.22 on the new one. Does anyone know what I should be using? As far as I know, everything is stock. This is on my rear axle. I haven't tried digging into the front axle. Are they the same?