I realize that square is nothing new. It is kinda new on this site as some of the guys have developed more and more hardcore truck though. And the 2 guys that I know of that run them have both had problems with breakage in the rear of the transmission area.
Seems to me that would throw up a red flag and therefore a beware message. I have heard of Jeeps and light buggies running square shaft unlubed with success but our trucks are alot heavier and it appears sofar that unlubed will not work well in our trucks. Therefore they are still under developement on how to get them to work properly on our trucks.
It just blows my mind that all these people are talking about running square shafts now even though sofar in fullsize rock trucks they have a 100% failure rate from members here. I would let the idea come together more, and let the people (which some of the people above may be) who have the skills, time, money, machinery, etc to get it right before I would dive into square shafts. I don't have them so I won't be trying to run square shafts in my truck anytime soon. I am waiting till the bugs are worked out.
Harley