once the Frame is placed on the track & enters the building
they already have several of your color in pieces & they are in the drying booth
At the Warren Assembly Plant, they
may be running blue crew cab 4X4s in the morning & red ones that afternoon & silver ones that night
they may do this for a week, then change over to 2 wheel drive Rams & run through the colors
Then they might change over to quad cabs & do the same thing all over again
Mean while down in Saltillo Mexico
they likely start with Regualar Cabs, then 2500s, 3500s, 4500s, 5500s
you just have to wait your turn in either assembly line
Meanwhile hoping that you don't get picked for the dreaded 100% Final Inspection & at the same time have a lot of add-ons, like sun roof, air suspension, nerf bars, spray in liner, etc
The assembly line does not put on the Add-Ons, they are sent to an outside Vendor for those & after they are installed, the Ram goes back to the assembly plant for Final Inspection
Then hopefully it goes right out for Shipping & Delivery