FWIW...I like to build my own so they fit just like I want them to...that rules out Firecores since they won't let you cut and crimp them yourself. Guess they have some magical procedure they do that us normal people can't manage.
I've run MSD, Taylor, Moroso, and a set of Firecore wires. No difference in any of them other than the look.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax