[Jeff H]

I don't want to sound like a negative person here, but dealer brochures and parts catalog listings have no meaning to what actually happened. Look at the 1971 LS6 Chevelle engine option that is listed everywhere, but was never actually available. Also, the MN6 dual disc clutch for 69 Camaros, it was listed, but none were ever ordered or delivered. I think it will really come down to looking at original documentation and original engines to determine what the engines were called. What does PHS say and what does GM of Canada show for these engines?