Converting a 2wd micra to 4wd micra, would be a similar process to converting a swift to a cultus 4wd (like itsmad). If you had all the rear floor plan, mounts, suspension, drivetrain (i.e try & get a smashed 4wd imported) & had the gear & free time it could be done. Everyone said itsmad could not be done & not look like a cut & shut job, but it looks damn near factory perfect. If you want an idea of how hard it would be, jump on redlinegti.com & look for garndi (I think thats the spelling), he is documenting his 4wd convertion, very interesting read.