Differential Gears

I'm looking for some 4.625 differential gears, I know they made them I just don't know where to find them, anyone know?

I think only the 4x4's have them but I could be wrong. I actually have a LSD rear end with 4.6 gears that I am going to swap my 3.545 gears into but I haven't got around to it yet.

Well I've got a 4x4, but it was a gasser with 3.92 gears.