Some additional information. It appears that what Ford is doing is allocating 2 - 05 Stangs to the small dealers and 3 - 05 Stangs to larger dealers. The objective is to get ALL Ford dealers to have 1 or more 05 stangs on their lots (or showroom floors). Initially the dealers will NOT be able to get any more 05 Mustangs unless they sell one or more cars from their initial allocations. Again the objective is to have as many as possible (if not ALL) dealers have 05 Stangs on their lot. The system is set up to make sure that a handful of dealers don't end up with 30 - 05 stangs while hundreds of other dealers don't have any. The '05 Stang will generate showroom traffic which will help to sell other Ford models, another objective Ford has.
Again the '05 Stang is a high volume mass production car. Ford will manufacture somewhere between 180,000 and 195,000 - 05 Stangs per year. Yes they will initially be in tight supply, but once the '05 Stang is in full production and all the early orders get filled, there will be enough of them to go around.