I bought one for my wagon recently, i just got it on ebay for $60 but i think the sedans are cheaper, you could try wrecker as well, just make sure it comes with all bolts etc.
As for mounting its a 2 person job, and in your case, since its already had one you wont need to drill any holes or anything, just bolt up.
Mr_Slim said:
How about those removeable ones? i want a tow-bar, but not all the time
No towbar is removable on the go. What you are talking about is just the tongue, but they are still held there by a bolt, pin or the like. I think on mine it has 2 bolts holding the tongue in.
You will also need a towing wiring harness unless it doesnt already.