can we talk plug gaps?

The 7,8,8.5,8.8 plug wire you get are the diameter of the insulation, nothing to do with the inner carbon filament size. 8.8 is a big wire that can handle lots of juice, like multi strike CD and magneto. .050 is usually what MSD recommends. Nothing to gain by going bigger if you use Crane Hi-6 multi strike as the CD coil output is pretty big with a 300V input from the box.