i have a current 9 bolt rear with 2.73 posi. anybody make gears for 9 bolts? and are all 9 bolt gears interchangeable? (do they all have the same size casing)? where can i find a used cheap 10 nolt to fit perfectly in my car. (89 iroc Z) thanx

 

Check out www.9bolt.com
Thats where i'm getting my gears from, they have new and used gears.

 

I would never install used gears as there is a wear pattern on them and they will be very noisey. You can pu gears for around $100.00 on sale with the install kits. Just my .02

 

2:73 are 10-bolt 2series gears. And if you have the 2- Series on a 9 or 10 Bolt you have little or No choice.

 

Call Richmond gears or Drive Train Speicalist ( DTS) They both make gears for both rear diffs.