Overboost

Quick question regarding the overboost bar on the MD11. I use the goflight throttle quadrant, If I advance the 3 thrust levers fully forward to the stops will I get the overboost or do I still have to assign a button to simulate overboost? My understanding of the real aircraft is you can feel a slight bump in the levers when you reach overboost, kinda like the Gates you find on the Airbus thust levers. Also do you get any visual indication on the PFD or SD's?CheersRobEDIT: ok a little more digging has told me overboost will switch the FADEC to ALTN and disconnect the Autothrust so pushing a button would be safer for me.