WTB: GM 8.5" 28 spline posi unit

[schwem]

I have an 84 W-40 Cutlass that has a one wheel 8.5" rear axle with 3.73's. I was told that it is a 28 spline set-up. I am looking for a posi unit that will work. You can reach me via mobile e-mail at kevinschwemmer@comcast.net

 

[9SECV6]

Got One Used From A 87 Gn With 8.5 342 In Florida

 

[schwem]

How much do you need for it? I have an account with UPS, so I will check on a cost for shipping.