Thanks Duncun.. I found some references too..
http://www.fullsizejeep.com/1024/suspension.htm
I wrote to him and he responded saying
"I have not had any problems with this conversion. The only thing is that I did not use any rubber bushing in the rear. So all road noises gets into the car. But I buildt mine mainly for off-road so it's not a problem."
Looks pretty cool. But i dont think running without rubber bushes, is not a good idea.