Been searching on pirate and other sites for the last few hours looking to a answer to this.
Seems this question has been asked quite a bit and the safe bet is to go with the center yoke. There is a lot of evidence that it is possible and some people get away with doing it. I don't plan on flexing this thing but who knows I may hit a deep pot hole or rail road tracks which could flex and break the joint. The risk of breaking outweighs the 10-12" I would see in additional drive shaft length.
Playing the safe card and using the center yoke. I will just run a Multiple Double Cardan drive shaft to eliminate vibration.
Thanks for all the help.