Found the broadcast with one of the previous owners of my 69 SS L-78. With a little convincing, he sent me 2 copies of the broadcast sheets. The question is, it says it's optioned with a M20 on the sheet, but my GM documents from George says it came with an M21, Which is what is currently in the car. Is this common for a mis-print on the broadcast sheet sometimes ?? Thanks for your time.
