Those numbers are still available through Napa here although they are $25 a piece now, at least here anyway. So that information may be a bit dated.
I haven't looked at an Echlin set in years and never use them, but the biggest thing I look for that wasn't mentioned despite all the info in that article, is whether or not the contacts are of solid material. Most of the cheaper $20 sets I've seen have a hollow center. Which is why I've stuck with Accel all these years, plus they have a 100% 35 year long track record with me so I have no interest in experimenting.
However, next time I'm at Napa I'll ask them to pull a set and have a look out of curiosity. I can also mic the diameter of the contact on Accel points that I have here if interested for comparison.
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