I've done it all the ways with a 162 skid 162 track, a 159 track and 153 skid and a 153 skid and 162 track. From my experieince the 153 skid and 162 track is too much of a difference in size it just really doesn't work that great or make the sled handle very well. The 159 153 is a direct bolt into the stock Yamaha holes even though the center to center distance of the two skids are different by 1/4" but you need to run anti stab wheels because it is a pretty big pull back. The 162 162 combo is the best and also keeps the front of the sled feeling the lightest. From my experience thats the only way to go I wouldn't waste my time with a 153 skid.
M5