I asked M.J. about...like 5 years ago & she said it would be no problem. If I'm not mistaken , I think she said they could do either in Alnico II....but I'm not sure. She might have said they could not get those mags in A2. Don't remember....I dont think you can get it in a Gibson size because of the spacing/size of magnets......you may have to go with the smaller "tele neck" quarter pounder mags because they are slighly smaller. Those you probably could squeeze into a Gibson size humbucker.