verifying lift kit height?

I bought my jeep with what I thought was a 6 inch lift a few years back. I’m replacing the old shocks today and come to find out that the old shocks are smaller than the 6 inch lift shocks that I ordered. But the old shocks were installed with what looks like spacers. Does my jeep have a 4 inch lift or is it a 6 inch lift with the incorrect shocks Mickey moused into it for the past 10 years??