There aren't many options. As far as I am aware, since I just replaced mine and dealt with this same dilemma, these are the choices:
1. Repair your antenna with parts from our vendors.
2. Buy a used one from wherever you find, including here.
3. Buy a NOS one. There are one or two here for sale.
4. Buy the power antenna aftermarket unit from either of 2 of our vendors who sell it.
5. Move to a fixed mast. I almost did this via a GM universal kit from the local parts store. I wasn't sure what to do about a bracket so I abandoned this.
6. Get rid of any antenna in that spot at all and move to some sort of windshield based antenna.
I went with #4 last weekend and I am happy. I just hope it LASTS.
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