it would help in some ways, not in others. you would rotate your pinion up to run with it, which would help with some vibration and driveline clearance at the rocks (just a little bit..).
however, the CV is waaaay back on the end of a slip yoke, that does not have a bearing at the output - so it would be VERY prone to vibration.
it also would mean the distance from the CV to the axle is shorter than with an SYE, so the angles themselves would be steeper - could hurt and not help at some lift heights.
also, if you bust a drive shaft, you cant just unbolt it and drive out on the front end.
An SYE will remove the rear output housing, and put the CV assembly itself about 4" forward of where theirs does.
.. If you're going to spend the money, spend a bit more and do it right the first time.
