PAFs were/are AIV.
If youre gonna go round swapping magnets, check with tim whether it will work well with that wind.
I think they used AIV, AII, AV and even AIII in the original PAFs.
But I agree, it's best to discuss with Tim what effect a magnet swap will have. He didn't just randomly chuck a ceramic in the Cold Sweat because he had some lying around, the pickup was designed to work with that magnet.
