I just now noticed that this topic is about the "infamous SM420".
"infamous" = adjective. having an extremely bad reputation: an infamous city. deserving of or causing an evil reputation; shamefully malign; detestable: an infamous deed. Law. deprived of certain rights as a citizen, as a consequence of conviction of certain offenses.
I do not think of that transmission as having a bad reputation?
I think of it as the famous and favored SM420 transmission.
"The SM420 has proven to be one of the best transmissions ever built." (see the Novak Conversions links, in two prior posts, above)