All of the following is up for discussion / correction.
First of all I want to say the pickups are only one part of the equation to that sound. The guitar itself ( a 59 with a really fat neck if my research is correct), amplifier, speakers, tuning, strings, whatever pedals were around in the late 60ls, Green's fingers, etc. etc. all also factor in.
Peter Green's LP was, if my short research is correct, a 59 with PAFs. It is said Green flipped the magnet, thus changing the polarity, and put it in backwards so that the slug coils were nearest the neck. The photo on Wikipedia seems to support that last statement.
PAFs were made on four different winding machines, two of which didn't have auto-stops, so there were widespread variations in the number of turns on each. 59. PAFs used Alnico 2 magnets if my research is correct.
So what we have is a "regular", meaning probably not particularly "regular", PAF bridge and a phase flipped put in (not wired in) backwards PAF in the neck, both Alnico 2.
Electronically, the screw coil, which would be a "south" on a normal PAF, is now a "north", the slug coil is now a "south", and the slug coil is nearest the neck. That's different to just wiring the thing into a guitar north finish = ground south finish = hot because the pole pieces are different.
Physically, the slug coils are nearer the neck.
I have a set of 4-wire Gibson 57 classics and two sets of 2-wire Epiphone Burstbuckers. All three sets have metal covers so it will involve de then re- soldering the covers. I don't want to mess with the Gibson units, but the Burstbuckers aren't worth sh-sh-sh-Sherlock secondhand, so I might be tempted to attempt surgery on one of those. Easy enough to add a push-pull to bring the flipped pickup back into phase too.
But I still wonder if just wiring in the neck pickup with the wires reversed or using a push-pull to phase flip, and mounting it in slug poles nearest the neck will get me there without taking a pickup apart.
