since u got a 92 gsr, u know that the cluster isnt gonna be exactly cheap. Actually its going to be very hard to find since those cars were made in such limited numbers. If you can pick up a used cluster from a LS RS or GS teg. from how im understanding the problem, you might be able to swap the speedo only from cluster to cluster, and if you can you are saved a big hassel. the tach on early models go to 9k if im not wrong, and that is the only main difference between that cluster and a regular one.

good luck