Almost sent this one to the tool box, but this situation hasn't really been covered here. Yes, you can lower the car by taking out a section of the strut tube (not shock tube) below the factory spring perch. You will need shorter shocks (Tokico HZ or BZ3099 front and HZ or BZ3015 rear). It will also be difficult to make sure the strut tube cuts are perpendicular to the strut and that the tubes are welded together square. The factory spring perch will get in the way.
Check the strut sectioning FAQ.