This is how I did it last July, after I wearied of searching the Dodge website state-by-state, city-by-city and dealer-by-dealer. I began calling fleet managers at different dealerships until I found one who had some sympathy with my search for a particular truck -- I actually eventually found two such fleet managers, in different states.
They each used the internal Dodge inventory computer system in the same manner as they would have if they were searching for a truck to "trade for", and then drive back to their own dealership and sell to me. The system will show what vehicles are actually ON dealers lots in the dealers' own inventory-for-sale (not trucks that have been specially ordered by customers). It will NOT show trucks that have been (were) ordered by a dealer for their own inventory but have not yet arrived at the dealer's lot.
Any dealer can search this system on any radius they choose, up-to-and-including the whole country. They can inquire for specific features so the system will limit its responses to vehicles that match the inquiry. In my case "white 3500 QC SRW 4X2 3. 73 auto trans, Laramie interior. " Each of the two fleet managers that helped me found the same five trucks -- one each in So. Carolina, Indiana, Ohio, Texas and Oklahoma. I began negotiating with those five dealers, and bought the one in Oklahoma on July 29th.
This requires a certain amount of "BS'ing" on the phone, as you have to get the fleet manager to "buy into" your problem, even though they aren't going to get anything out of it unless by some happenstance they have the truck you're looking for. After I closed the deal in Oklahoma, I sent each of those two fleet managers a bottle of booze -- I figured they would find a good use for it one way or another -- and I may want their help again in the future.
Two dealerships that I KNOW have a LARGE number of '03 trucks on their lots, because I have been at each of them, are Chaprell Dodge in Ada, Oklahoma -- Fleet Manager Art Chapman, 1-800-880-2427; and Thomas Dodge in Bend, Oregon -- Fleet Manager Greg Thiessen, 1-888-783-3031.