I am trying to decode my trim plate and am wondering how GM came up with the "Body Unit Number." My car's vin is 124379N608285. My Trim Code (pictured) shows the Body Unit Number as 277628. As I understand it, this number reflects the sequential production number - correct? What sequence? Just the body production or is it the overall Camaro production in 1969? Is it just for NOR or both NOR and L? GM only made 243k that year and this # is higher.... can anyone help me make sense of this number? Thank you