Chevrolet built 4475 1970 LS-6 Chevelles,Including Convert.& Elcaminos.(Thats for you Dean)
I would find one with past owner history or paperwork to support it's claim.There are more LS-6 engined cars on the planet now then Chevrolet ever considered building back then.
Make sure it's build date is not before December 1969.
There is an entire list of Characteristics to look at, so checkout our Team Chevelle website as well.
www.Chevelles.com