The older A3 is like that are easy if you ever do have to split the main engine it will just come right apart the bearing races won't move from their places and all you really have to do is replace the damaged part of the bearing which could be the inner or outer race and then put in a new set of bearings that are on a ring spacer easy peasy Iggy get the gasket kit for an A3 from treats or Myron's better yet get the manual and study up on it