Ok I got this axle from a guy for $125, He said it was 8.8 with 4.10s from a 95 ranger with 70k. I drove three hours to pick it up and I found out it does not even have 4.10s in it, they are not installed yet. I still took it with the 4.10s. I know a mechanic that can help me install for a case of beer. MY question is, is this even an 8.8? The tag is not on it and it looks the same as my 7.5. Before I even bother cleaning it up I wanna make sure its right or Ill drive back there and get my money back. How else can I tell aside from the axle tag or looking at the truck what axle i have. Thanks guys.
Heres some crappy pics. Oh and look at the pinion, a few teeth are chipped, nothing major but is this ok?

 

thats a 7.5 rear end, you just got ripped....

thats an 8.8 cover its flat on the sides

 

Great, well looks like I get to drive another three hundred miles.

 

Hammer time haha...go get your money back.

 

yea and you DO NOT want any chipped teeth on the ring and pinion gears either.

 

Ya I took it all back and got my $ back too. I think now Ill be a little more aware of what I'm buying from now on.