Thinkcentre Rails question - i need them

[quasimoto16]

Hello, I have two thinkcentre small form factor models 8183  and 8171. I need the hard drive rails to install hard drives in the system. Does anyone know the part# of the rails or where i can order them. Or can anyone confirm compatability with this ebay ad 

Thanks in advance.

[losmeme]

The eBay ad you reference are not the rails you need, they are for an earlier NetVista system and will not fit. The part number you need for both of your systems is 03R0302. These here will work