Just a quick one-are mini humbuckers and p-90's the same size?
Can i just change a p-90 to a mini humbucker?
Quick google gives you the info that it does drop in a p90 route. The ring used by minis takes up the extra space on the ends of a p90 route. There are several stories as to why the mini was used in some guitars. 1 story goes gibson made a bunch of p90 routed guitars but everybody lost interest in the p90s when PAFs come out. As its not easy to fill in the route to fit a regular humbucker they come up with the mini as a drop in thing to get rid of all the bodies they had made. Another is they wanted to use cheaper pickups in epis vs PAFs used in gibson. Not sure the true story.