Originally Posted by _Ethrty-Andy_

all of this taco business and noones answered the problem

OP, assuming you still have you 323i cluster, on the front of it and also the 4cyl one, you will see a white part. this can come out, and can be swapped over. the cluster itself is actually the same, its this white module that tells it whether the cluster is in a 4cyl or 6cyl car.