I have what I believe to be an 8.2" rear axle out of a '67 GS/Skylark. It's definately an early 8.2", anyway, the only codes I can rear on the axle tube appears to be: N 08 MG, by the way, the axle has 3.23 gears and posi-traction. I'm just trying to figure out if they are original to the the axle or not. Thanks in advance.