help please: is it a 1971 malibu?

hi
how can I tell if the 71 chevelle I am looking at is a malibu?
Seller says it is and thinks the malibu tags were not reinstalled on the car.
Where are the malibu tags located?
Also is there a trim data plate and if so where is it located.
VIn # off door is 136371R135058
I have decoded it and it says chevelle.
thanks for any help.

I thankyou for your time and help.