I bought my antenna mast at the local Cadillac dealer...It was $36 and it arrived 4 days after I ordered it. 
I never heard of them, but it would be wise to use a regular credit card (as opposed to a debit card). That way, if they give you the shaft, you can get the credit card company to help you. Consumer rights are vague and sometimes nonexistent if you use a debit card. FYI.The_Wolverine said:Does anyone know if this is a reputable site before I go and buy the parts from them?
The_Wolverine said:well the continuing adventures with my 1992 Sedan DeVille are becoming agravating. I replaced the tank, and had all the brakes done. Aperently the previous owners never touched them. The front calipers were rusted on, the rotors were severly under spec, as were the drums, rear cylinders blew out, and the pads and shoes were down to the metal. $800 to replace them all at midas. so now thats done. then all of a sudden my retractable antenna won't retract and the motor keeps running. I disconnected the battery then went in the trunk and pulled back the lining, then unpluged the cabled from the antenna. I spent an hour and a half taking the assembally off and taking apart the motor to figure out what happend, well I found the problem. I'm going to make this statement clear and concise, as I tried to with the dealer, the motor is FINE, all I need it the antenna. I'm sure most of you know how the antenna works, but I'll say anyway. There is a piece of plasitc rope that is hard enough to push the antenna up but flexable enough to wrap around a gear. This rope goes through the antenna and into the motor, then is connected to the inside of a hallowed out gear. The motor is attached to a screw which turns the gear. When the gear turns counter clockwise it winds up the rope and retracts the antenna untill it runs out of rope and the screw is pulled down and hits a switch. when it turns clockwise the revers happens. this piece of rope is all that broke, so all I need is the retractable antenna. As a temporary fix I have taken the motor off and wrapped tape around the end of the rope so it doesnt pull out. I left the rest of the assembally, so whenever I want to use it I manually pull it up. the radio works fine that way. Does anyone know how I could fix this or where I could get the antenna by itself? Thanks for your help (and reading this novel) in advance.