I'm not in agreement that a super-short SYE is needed for such a small suspension lift. Especially since SS SYE kits eliminate the speedometer gear which requires the additional purchase and expense of an electronic speedometer calibrator.
I installed a standard (non supershort) SYE into my previous TJ and ran various sizes up to 5.5" of suspension lift with never any vibrations whatsoever in my short wheelbase TJ. Being able to keep the speedometer gear installed is a definite plus, not needing an electronic speedometer calibrator cuts costs and eases the overall installation.