Looking for roof rack parts

[cstraw]

In the summer I picked up a set of cross bars for my wifes 2005 Pontiac Vibe. I purchased the bars from a auto wreckers and was not given the 4 'square' nuts that the tightening screws anchor into to secure the rails firmly in place on the roof rails. Can anyone suggest where I can find the 'square' nuts I need. I have tried the local GM dealerships but they were of no assistance, suprisingly. Thank you,Chris

[joatmon]

I bought a set of cross bars for someone else's vibe, and the junk yard lost two of them, so I took two of the plated from the bag of rear storage anchors and ground them down with a belt sander.There used to be a thread here about those things, but I think it was in the for sale forum, and those threads get pruned automatically after a few months, so I can't find it. Someone had the GM part number, and those things were overpriced.