I would also recommend removing the IM to do the delivery valves seals and crush washers.
Special socket is required. The pdf in this thread shows the delivery valve and part number.
http://www.peachparts.com/shopforum/showthread.php?t=173991
Torque is 35NM, one time only.
Is necessary to be surgically clean when doing this job. Must not distrub the pressure valve carrier (7G) down inside the IP or pump can be ruined when 7 is torqued down. Diagram is misleading, 7H is the o-ring sealing the threads of 7 to the IP and 7F is generally found up inside of 7 when disassembled.
This is not difficult job but is one you want to be precise about doing. Removing the IM would make replacing the fuel line and/or shutoff valve o-rings at the same time that much easier.