you replacing? If just 1 - 3 suggest a dremel approach. What ever way you do it pressure test the injector(s) for no fuel leaks before starting the car. The pressure test is easy to do with a small air pump that is valved to prevent back flow thru the air pump. What you pressure test is both fuel rails with injectors. The fuel rails are disconnected at the fuel filter and the return line to the tank. Then set up a loop with the air pump to pressurize.
If doing a plenum pull here is the procedure from tech
