Block needs cutting/modding where the starter attaches apparently, custom flywheel, custom gearbox mounts, custom driveshafts, prop and linkages, custom adaptor plate between box and block so the box bolts up, then whatever you need to get the haldex working etc etc, Deffo not a bolt on mod if thats what you were thinking mate, for the work thats involded you could fit any box you desire, the same amount of work will be involved.