Low band apply or not?
Is the difference in critical mass rpm addressed for each or a blanket, you need a drum?
727, get a billet drum. I think I saw that before and he says 9k front drum CM speed. His 9K and 12K test results I've seen are both within reach of even stock 383-440's
904 run a good stock piece and don't worry unless you are turning some serious RPM.
Simple and efficient approaches.
It's a 727 issue.
Been at this over 45 years, never seen a 904 explosion. 727's, quite a few including a car we owned, a Polara Wagon.