I originally bought a set of those in red (high heat). I think the guy makes the sets. The wire is MSD, but not the boot or plug at the coil. I threw a misfire DTC. Changed to real MSD's, no more code. Coulda been the luck of the draw but for another $12 you get a set made by MSD.
I also added fiberglass sock things at the headers. The annoying brown spot in the photo is the skin from an almond. I can eat enough of them and get almond crumbs on stuff, sorry.