Found my dads original 1971 duster!

That does not make it right. 10k for a long block rebuild with a cam? And you will not stand behind a stock motor?

I don't care if you are Keith Black, that is B.S.

Hell, you can buy a motor from summit cheaper and with a warranty.

This good man depended on them and paid more because of their name.
I wasn't implying that. I just thought that name sounded familiar.
https://www.dragzine.com/news/is-the-1972-motown-missile-cuda-gone-forever/Look closely and you can see the name on the front fender in one the the pictures.