Will these pickups fit into my guitar?

The neck is the one that is always 50mm. You can choose to have your bridge pickup in 53mm which is what you would need for a floyd rose bridge. When you order on their site they have all these options like the colour (they have an extensive range) and what spacing you want, the magnet, the sort of pole pieces you want. If you want to play heavy metal i recommend using ceramic magnets. not sure what sort of polepieces you should get but i don't think it matters much.