my chevy needs a carrier bearing

[threeonthetree]

I need to locate a carrier bearing i cant seem to find the stock one. links or places, you may have bought them in the past.
I keep finding the aftermarket ones that you have to mod the crossmember to install. id like to keep it stock.
has anyone bought theres from a auto parts store ie autozone, advanced auto parts or any others...
id like to get it in town if i can cause i dont like to pay shipping
any help is appreciated i need to get er fixxxed as soon as i can.

to keep the old gal rolling.