I got mine (the same exact car except for a 5 speed and 2.73s) for 5K, but that was in FL (verts are higher in FL for the obvious reasons). You can look at the blue book, but it will not take into account the anniversary edition since Ford doesn't officially call it that. If all in good working order mechanically and the body isn't too bad off (surface rust versus holes, the top is ok and works good) I would start at $4500. You can always go down. If you are not in a hurry, try the higher and wait. Summer is coming and people will be looking for something like that. If you are in a hurry, I would use the prices 93Fox said. It will probably go somewhere around 3200 (unless you need the $ badly and have to sell now).
ok i want to sell my car and i dont know how much to ask . its a green 1990 convertable with a white top, 110 thousand miles and its from ohio so it has some rust around the doors ,the trunk lid and front fenders. the inside is all white with white leather seats and in pretty good shape. power every thing, the engine is stock with an AOD , it has a mac cold air intake, flowmaster dumps and h-pipe with converters and stock 3.27 gears. it has tirbines on it to, oh ya its the 25 anavirsary edition.it runs good. if you people can help me come up with a price to sell it for that would be great thanks 
