magnet swap

Hi everyone this may seem like a dumb question, but there is two ways to invert the phase of a pickup, right? You either flip it's magnet (as done on lot of Peter Green Guitar tutorials to get that sound), or, much easier, you just invert ground and hot wires internally, which, in my opinion...

I have a pair of 70’s vintage APB4 Alnico 5 humbuckers that I’m repairing: one had a shorted lead and has about a 1/4 of the magnet missing. I found direct replacement bars, but noticed that a filteron bar is twice as thick but will fit otherwise. “Caveman brain” says bigger is better, but...