As far as I know ,,,you could get a sunroof in all challenger model years,,,The 1971 r/t I had code M51 did not appear on the fender tag .
But on the inner fender tag , right beside the build date,theres the car order code ,,mine started with G001xx, well that G001XX told you that the car was sunroof eqipped ( atleast for 1971 )
confusing I know..
Does any 1 else have this G code on their fender tag
?
I did check last night and 1972 that the Barracuda /Cuda was the only year that offered a code M51 ( sunroof )
As far as for being an export car,,,you just never know. take care 426