Since the strobe slippers are avalible again from mike i decided to use mod 1 gears. I got a recomendation of a 16-51 pinion & spur combo with ue diffs. Would you BL experts agree with this recomendation. I would like to buy the slipper tonight from mike so your quick response would be appreciated. Please give a recomendation for a 9L & 7XL. Thank's