well i'm looking for parts again

this morning i went out to replace my panhard arm which i thought was going to fix the banging coming from the back of my car, come to find out i have a small hole in my differential

didn't i just replace the rear end in my car? oh you bet..... just imagine how pissed i am

so now i'm looking for another rear end cause the one i just put in has a ton of miles on it and I don't really think its worth spending almost $300 to replace the gears and still not have posi

so.... does anyone have a 3rd or 4th gen rear end that they want to sell?
I'm so pissed about this, all i wanted to do today was to get it so i can drive my car again (its been about 3 weeks of waiting for parts and what not) and now God knows when I'll be able to drive it again