Long valves on W2's with .600 lift?

mine's 1916 you're older than i am-house that is
that 15 spring would work at .600 lift 385lbs
the 16 also works at 1.85 130/375 if u have to stick a spring locator in
still like the 1220x
if that is what lunati has they are $10
if knock off's i'd pass