This flip of the wires is normal with the Super Ferrites. The SFs, and some Gotoh made single coils on some of my early 80s Ibanez guitars, do this. I first noticed this wire color flip when I was replacing pickup switches in a couple Ibanez decades ago. The pickups sounded in phase and hum cancelled, so it was apparent that it was proper, so I made note and copied the scheme on the rewire. Apparently, these winders would just use the same color wire to start and finish the winds on the coil, regardless of the coil winding direction and magnetic polarity. When it came time to hook them up, the RW/RP of one pickup would require the reverse wire hookup to be in phase with the other pickup.
There has been many instances where someone rewires their Foundation/Dyna/etc... and wires both pickups up with red for hot and black for ground, resulting in an out of phase tone. Flip one and all is well.
Eventually, pickup makers just offset the RW/RP pickup wire colors to avoid this confusion.
Yep!
All of my Super Ferrites (both bass and guitar versions) meter in the low 5s, yet they balance with other pickups that have higher resistance, but weaker magnets.
Low wind to get clarity, strong magnets to get output. It's a great combo.
Looks like alder (or something very similar/closely related). I remember my 93 Foundation body being the same wood, which I thought was alder. Only had a little peak at the grain in the neck pocket, that and the hardness of it seemed like alder.