Question for members that were of age in '70

A guy down the street said back in 70 when the new Plymouth Duster was about to come out. Said there was talk of a Hemi being available in it. I know that never happened. However, I always wondered why big blocks were never an option on the Dusters and Demons. They put them in 67 to 69 A bodies? Why not these. I just wondered if any of you heard any talk back then on this topic. Can you imagine if they had? Those would've been a handful!
Not that I ever heard. Mr Norm didn't put a big block in any that ! know of either.