Although not a Big deal,his statement of one of 6 known to exist is not accurate.
There are at least 10 Documented 1970 Chevelle L78 Convertibles that I know of,that are still on the road today.I know of 8 more that are undocumented and need to have more research done to show their authenticity.
Being the Minority,only two of them have a TH400 Transmission.
That one is a Beautiful looking Chevelle.
I have a gross of Chevrolet 8tk tape,door mounted holders,and put a set in my Chevelle for kicks,.....they do look good.