I like the old Magnecor wires I have,
and have tested using a Biddle Megger, salt water, or after a suggestion here on Moparts,
strips of aluminum foil wrapped around the wires to test for shorts.
I liked the technical information that the “old” Magnecor put on their website, but is unfortunately now gone, but is on the Internet Archive Wayback machine.
I like how the grade of insulation used on the old Magnecor wires has held up since 1998.
I like how Magnecor offers the option of buying special wires that reduce radio Frequency Interference (RFI)
I like how Magnecor put on their website the Dodge Ram TSB about cross fire using the original factory wire routing.
https://magnecorusa.com/v8/I am not totally confident the new owners of Magnecor will provide the customer service of the original owner, but they have expanded worldwide and offer lots more options.