| These are used R200 differentials. Posted price does not include the 60 day refundable core charge. That figure will be added to your order automatically by our store when you finalize the order. There is also a 15.00 charge for the use of our custom box and a 50.00 60 day refundable core charge for the custom box that we use to ship these diffs in. All of these diffs are backed by a 120 day warranty. Cores are subject to inspection and gear damage will usually negate the chance of getting any core return but not always. Always be sure to double check the style of differential that you have in your z before ordering parts. For identifying by picture, which diff you have just go to Used Differentials and look at the pics for the 2 styles. There is the R180 and the R200. We now sell an LSD conversion kit for both models of z car differentials. See listings. ALWAYS be sure to let us know the year of your z or zx so that we can send the the right differential for your application. Let us know if you have CV joints or U-joints as well. We always drain our differentials before shipping so always be sure to put new gear oil in the diff before installing or before running the diff. The posted price applies only to the 3.54 or 3.55 gear ratio diffs. If you want one of the other gear ratios in the R200 diff, the prices are as follows: 3.36 = $499.95, 3.70 or 3.90= $599.95 Subject to availability. Last update 07/11 | 
