COPO BE rear on craigslist

[mbxlesney]

Doesnt the BE rearend have straight axle tubes from the carrier to the axle flange whereas the BV and other lesser 12 bolts have a taper in the last 1/2 inch or so at the rear side of the flange where the backing plate bolts are. I always thought BE 12 bolts had the larger Full Sized (Impala) etc outboard axle bearings and larger carrier bearings also? I know there was no pic of this area but can someone tell a BE by external appearances besides the stamping. Ive read the gears are heat treated also. Can anyone shed any light on this? Just curious Thanks