So I recently picked up a front and rear axle from a 82 GMC c70 and was trying to identify the rear end(found out it's a Eaton 17221 2 speed with a 6.57 high and 8.96 low) so I know the ratios and can see if I can get parts/gaskets and if anyone knows of a solid source that would be great.

So my main question is- Is the differential limited slip I was looking at this parts list I found online and it shows that it has clutch packs in it which the only thing I can think of would be for limited slip so I am just wondering what that implies if I take it apart to inspect before I install it.

Here is the link I found https://www.wholesalegmpartsonline.com/showassembly.aspx?ukey_assembly=430720

1967 Chevy c50 327 w/ sm465 5000Ib front 15k 2 speed rear w/ 22k springs, single axle, hydraulic brakes