Do you think is possible to replace a part or two to make it stronger so it can last?

 

The G80 isn't bad, doesn't give driveability or turning problems. Theirs no simple bolt on upgrade for them though, an auburn pro posi or powertrax (seams to be only for open diffs?) is a simple upgrade. But us chevy guys I think can get an Eaton "E locker" which eaton calls an upgrade from a G80 locking diff.