C1500 10 bolt G80 diff width

[Rick1991]

Looking for measurements from axle face to axle face, I can get a good deal on a 12 bolt with a trutrac just unsure if it will fit.

Came up with this thread, http://www.gmt400.com/forum/showthread.php?18256-OBS-rear-axle-width&highlight=width

But the one guy "thinks" and the other guys says a measurement but who knows where he measured from lol.

Thanks!