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On a NA engine, you should be able to remove the IP and all the injection lines as one unit.
Loosen all the nuts on the injection lines at the injectors.
Remove all three wire connectors from the IP.
Remove the throttle cable from the IP fuel lever.
Remove the supply line from the fuel filter to the IP.
Remove the return line from the IP.
Remove the throttle return spring.
Loosen the three nuts holding the IP to the IP drive gear cover.
Remove either the cover plate or the oil fill spout from the front of the IP drive gear cover.
Remove the three 5/16" 12 point bolts that hold the drive gear to the IP drive shaft.
Slide the IP straight back, finish removing the three nuts when you have enough room to turn them off.
Now slide the whole mess straight back while raising the rear of the IP.
It should lift right out.
Install, just start at the bottom of the list and go to the top.