Can I take the plates from my other vehicle and put them on the new one, until I get plates for it?
No, sorry. Legally, you would not be able to drive your new vehicle until you get license plates and registration for that vehicle.
What if the vehicle is only a couple years old?
Before you buy, make sure that the seller has completed the appropriate damage disclosure statement. This statement would show whether or not the vehicle's new title should be branded, "Rebuilt Salvage".