Well, after looking very closely, there is a difference, both in the wiring and in the actual cluster itself internally. While the wiring could be changed, the cluster internally is different, so the '99 cluster will not work with the '98. I went back to the wreckers I got it from and they did have a '98 instock, but it was for the console shifter and not column. Mine has the column shifter, so the cluster doesn't have the shift indicator on it. So I decided that that would be a fun project also, took the cluster, and am now looking for the console unit now.