Center sections

brian6pac said
It will work in all 3 cases, 489 has bigger O.D. bearings

I said it wrong it's the I.D. that is bigger on the Borg Warner cone clutch 70 - up 489 case
The Dana Power lok sure grip 57 - 69 741, 742 cases use the same bearings
So the power lok will fit in all 3 cases