Eaton Rear Drive Axle Issue

Ok looking for ideas on this one. Our Driver ripped up the rear end of Drive axle on a 1997 Freightliner FL80, tandem with a Cat 3126.
He ended up dropping the flatbed lifting jack at the offload site into a pot hole and instead of adjusting the jack or lifting the trailer he tried to us the truck torque to pull it out, which ended up ripping something in the drive axle. No lockers on this so it had to be pulled off site. We are hauling containers.
Rear end spec.
S11-19628-488
Model #RS404
Spec. # 0564471
Serial number H963315662
Part no# 508549
Ratio is 00488
Question is there any alternatives to replacing this rear end or do we have to find the exact same specs.
Any suggestions or info on Eaton rear ends would be great. Thanks in advance.
I do not care about fuel mile, more interested in it being idiot proof, or heavy duty at least.
[FONT=&quot]FL80 has a 3126 Cat Diesel, 300 H.P, Eaton RTLO 10 Speed, 40,000lb. Rears , 12,000 lb. Front Axles
Vin 1FUYJJCB1VH749782[/FONT]

 

Ok looking for more info on this, I cant just ship a rebuilt or used unit do to the location of the truck and the time it takes to get in parts.
the Ring Gear and Pinion is Part number 211489, 39-8 teeth 4:88 Ratio, We have 4.33 39-9 Ring Gear and Pinion available. also this is a 15" hypoid Gear with Single Reduction Axles with out Diff. Lock, will this work in this differential with out causing any major issues? Any rear end specialist out there. Thanks

 

Ok another Idea, we are hauling only empty containers 20 and 40 about 4800 and 8500 lbs with in the yard.
The issue is with the rear rear end, can you unhook rear drive shaft and yoke and pull the differential out, pull the rims and tire and run just the front rear end for a few months till I can get a rebuilt rear rear dif. in. Any major issues with doing that. Thanks.

 

OK Cetane, thanks for the information and tips, I have located a used dif, but my issue is the I cant get it to the truck site for 3 to 6 weeks in the mean time we are missing out on about 500 to 1000 bucks per day. So I was looking for a short turn solution to fill the gap, while waiting for the parts.

Also, how much weeker is the front rear axle or is it the same guts as the rear rear