RECENT STUDIES HAVE LED TO SIGNIFICANT DEVELOPMENTS IN PROBING THE ENVIRONMENTS AROUND SUPER-MASSIVE BLACK HOLES USING X-RAY REVERBERATION. THROUGH OUR WORK THE FIRST BROADIRON K LINE REVERBERATION SIGNAL WAS SEEN IN NGC 4151. WE WERE ABLE TO SEPARATE FOR THE FIRST TIME SHORT AND LONG DELAYS COINING FROM DIFFERENT RADII IN THE ACCRETION DISK.RECENTLY WE PROPOSED TO OBSERVE A SIMILAR OBJECT MCG-5-23-16 WITH SUZAKU. IT IS ONE OF THE BRIGHTEST AND MOST VARIABLE AGN IN X-RAYS MAKING IT AN OPTIMAL FOR THESESTUDIES. OUR REQUEST FOR A QUASI-CONTINUES 300 KS EXPOSURE WAS ACCEPTED. HERE WE ARC SEEKING FUNDING TO ANALYZE AND STUDY THE NEW DATA. THE AIM OF THE STUDY IS TO CONSTRAIN THE EMITTING REGION SIZE BY MEASURING LIGHT CROSSING TIMES DIRECTLY. ALSO BY MAKING DETAILED MEASUREMENTS OF THE LAG-ENERGY DEPENDENCE IN AT LEAST THREE TIMESCALES WE WILL BE ABLE TO PROBE THE STRUCTURE OF THE INNER ACCRETION DISK IN A MANNER THAT IS INDEPENDENT AND COMPLEMENTARY TO PURE SPECTROSCOPY.