FM Converter - Edit: Got one!

I am looking for a FM converter. If you don't remember what these are, they were made in the 60's and 70's to put in cars that only had an AM radio.

They were usually made by Kraco or Radio Shack, etc and they had just the FM dial. You would install them aftermarket, like under the dash, plug them into the AM radio (via the antenna plug), apply power and you had FM reception.

They looked like such:

http://cgi.ebay.com/ebaymotors/AUDIOVOX-FM-CONVERTER-_W0QQcmdZViewItemQQhashZitem2c57995d3aQQitemZ190448229690QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

I don't want to buy one off of ebay because I will have no idea if it works (so few seem too anymore).

Thanks

Thomas

That takes me back! Thanks Thomas. Now I feel my age. I had one in a 65 Buick Skylark Grand Sport back in the early 80's. I wish I still had it.(I mean the GS not the converter)