I haven't seen it yet but...the steering box mount has always been a flex point in the system. Gussets to shore up the mount and reduce deflection have long been a standard for improved handling to those in the know, so the thought that the steering output shaft is too long and allows flex seems almost like a band-aid fix to a practically non-existent problem, IMO. However, if it is a simple bolt in, then maybe it has some merit compared to yanking your engine out and welding up gussets to the steering box mount, and at $150, they will still sell plenty because the cheap way out is also the mucho harder way to fix the issue.