D, bw78 is much larger that a h165. Bw68 is similar in size but no lsds are available for them
Jmac, why would you ever want to change to the wheel bearing design of a bw78? They are a #OOPS# design that doesn't have any real means of holding the axle in the right place, as the taper is pointing the wrong way. I was actually wanting to change my bw78 to the h series bearing setup so that my rear brakes worked as they should. As currently the axle has a couple of mm movement and that doesn't agree with my opposed piston rear calipers as its always pushing the pistons back in to the calipers