If you can use the mfg site to build the truck you want and see what other dealers in the area have it. Print out the inventory / window sticker online.
Call and talk with the sales manager to confirm the truck is on the lot and ask him/her to fax or email you their numbers. Should have within 30 minutes. Once your have 2 or 3 prices start working the phones. I found that dealing with the sales manager you cut out the back and forth and when it comes time for the delivery they will assign their best sales person to deliver your truck.
Not sure if Ram / Dodge has a credit union pricing deal like gm. If they do look into that.