I've been looking into a couple ix's now and I never found a good buyers guide. I know this one http://www.e30tech.com/forum/showthread.php?t=74650 but I was looking for more detail, specifically when certain parts start to fail. Im looking at picking up an 89 iX but I don't want it to be more trouble than I can manage. It needs a new transfer case and I cant seem to find anywhere that says how difficult a swap is.