yeah the one on the floor is near impossible to change without looking dodgy...
i have seen one which looked real and then pulled the carpet back and it was basically cut out the original car and welded in the new one......half the car was a white VR and the other half was a RED VS (under the carpet).....checked it after things looked dodgy..VR steering column, steering wheel and keys but VS interior and some interesting humps in the carpet from welds....
but thanks again for the tip BOGANV8...went and looked at it last night and found it and all matches ...LOL