Technically it's only correct for the older 1970 version of the Challenger , as the "new" Challenger comes from the factory with the Challenger on the Passenger side. So the mounting the older Challenger Script on the passenger side is actually the correct side.....
(That's were I have mine mounted)
But whatever side you choose....the older script looks much better than the newer style
badge.
(The new Challenger also needs this script on the front fenders to look right)