That will require strengthening the wings. The wings can have two more pylons outboards and two wingtip rails. But we dont know how much dissimilarity the control systems can handle and what will be the cost of opening and strengthening the wings. But yes, these engines will force the CG to move forward and somekind of wingtip devices are needed to bring the CG backwards. Maybe fixed ECM pods will be a better option.Perhaps you will increase the MTOW with this engine?