steering shaft

[madcow75]

Okay I want to upgrade my steering shaft and get rid of the rag joint with an xj steering shaft, but I am not sure which are compatable. I am looking for some tech info please, before I go to the wreckers looking. I have a 76 column. There is a break in years from 73-78 and 79-87. I no that earlier are splined and newer have a square shaft. I am looking for an xj shaft for my splined steering column. Which are compatable for a 73-78 steering column? Does anyone have some input on this or done this. I am sure someone has.