i have to agree with the old posted charts.
however with that being said, i never heard of the "super gold" box until now.
the gold box i am [sort of] familiar with is the gold "race" box that was a DC item in the mid to late 70's and early 80's.
i have used the "chrome" box before, and it works good up to 6500rpm with an accell [big] yellow coil. used 7.5 mm [?] orange factory wires as well.