Yeap, well the truck came with welded diff and it hasn't bothered me much since then. As the idea is to build it up so it remains as sleeper. The LSD rear end idea is good, but will be done IF I break that welded diff (which has not been successful so far). There is the big difficult side on tuning the 4D56 as there aren't any performance parts available for those.. If I want to get stronger crank or pistons or anything else then I probably have to have them custom made which takes lots of labor. But again it's a project car and will be done if needed :D