I'm sure this has been discussed before... kinda a newbie question but these type of questions are hard to search for... Anyway, say I wanted to replace or upgrade the pickups on my P-bass (I don't, but lets pretend I do), what if they are of different size or shape of the traditional P-bass pickups? Do any companies make specific P-bass size and shape pickups since it's a very popular bass? Or do they just cut into the wood. I really have no idea how this works. Can someone inform me?