Mike66Chryslers
Senior Member
Hard to say the PO had little to no info about the car and there is no fender tag
What colour is the engine? Canadian made 300s and their engines were made at the Windsor plant, and all engines at that time were painted red. They were also painted after they were mated to the transmission, so there should be red overspray on the trans bellhousing. Also the pulleys and power steering pump should also be red. If this is all true for yours then there's a reasonable chance it's original.
If the engine is turquoise or orange then it is not original to the car or has been overhauled by someone who didn't care about originality.