Parallel ignition systems, anybody tried running one?

Standard LX101

Made in the USA SMP versus Chinese Borg Warner Echlin

Two different animals
Careful now. They are made in China now. Have been for some time. I don't know "WHEN" that occurred. Shortly before I left O'Reilly in 2019, they were beginning to stock Standard Ignition products, all of which are now outsourced to China. I never got a chance to verify that with the Blue Streak line, but I suspect it is the same. I try to look for older NOS parts on ebay. If the box isn't old and faded, I stay away. So far, it's worked well.