just before we left for blazer bash i slaped together a square front shaft shaft. i had a stock front shaft with destroyed splines i used your the yokes. the the steel cost about $25. after BB i noticed the front out put seal was leaking slightly. the fastest i ever drove with the hubs locked was maybe 10 mph. after i returned i made one trip to pismo and the seal was DONE. i probably went about 30 mph tops with the hubs locked. so i replaced it, went out to pismo last night and the brand new seal is wasted. if it is chewwing up seals this fast i have to imaging the pinion bearings and T-case bearings cant be real happy either. so after my square shaft experiance, this is my opinion: square shafts will be great for spares or very low speed crawling. other than that, no sir i dont like it.