[bl-is-future]

Not sure if the losi TiNi will fit or not. Get the diff you pictured and the bulk heads by flm and you will be fine. Now the shimming is just pressing the crown gear tightly to the center diff gear. As long as there is no slop you should be fine and the diffs will last a good amount of time. The most important thing is shimming. Most people just throw the diffs in and call it good and with nitro it is ok but still not good. With BL it will shred the gears if not shimmed correctly.