When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
03 and up Rams should be common rail.
Not a great pic but you can see on the right side is a long fuel rail (like a gas engine) and the short lines off the rail go to the injectors.
If you see 6 long spaghetti like lines running to the cylinder head it is not common rail.