I asked if I needed a puller because in most cases if a part is "pressed" in place you would need one and not be able to tell,in other cases you rely on the experience of others.See ,I run a mobile service,I did not have a puller on the truck,one was available from a friend,I was trying to save my self a trip to his shop by asking,I don't do alot of these and figured I would ask for a general opinion as to what to expect,anyway they came right out ,simple as pie,strangest thing was,I bought two new injectors for a 2GM20 motor,when I pulled them out,they were different,went back to my parts man an he asked me for ser.#'s ,did'nt have any on the motor,then he told me that the injector I pulled was from a 3GM20 motor,told him ,NOPE ,2GM20,he said he was looking at a 3GM20 injector and the new one that matched was the same,so that is what is in it.NOW for the good part,turns out that in 1984 Beneteau made 4 of these boats ,the boats were modified and shipped from France,they have oversized injector pumps from an "H" motor and injectors from a 3GM20 motor,they were trying different combinations and made "alternative " parts for M20GM motors,they look pretty much the same,just don't look for ser# plaques,because all you will find is an over sized injector pump,they are plumbed a little different also,they also tell you that the salt water pump is a 2GM20 but should overheating or higher than normal temps occure,then a 3GM20 motor pump can be used,they were not fresh water cooled as to cut down on motor wieght,the owner has just become aware that he accidentally purchased a modifed ,full custom race boat,he always wondered what those first and second place plaques next to the helm station were for ,now we know,interesting HUH?