2014 Silverado 5.3 high pressure fuel pump

Helping my son with his truck. We had to replace the valley pan vlom gasket due a heavy oil leak. We had to remove the valley cover to do the job and the HPFP was bolted down on top of it so it needed to be unbolted and carefully set to the side. The motor has NOT been turned over since it drove in. Mh guestion is this. Can the HPFP simply be bolted back down as it came off??? Or do i need to make sure the cam is at its lowest point?? I do have the the pump alignment tool if needed though.

Anyone got any ideas on this question?

Here's the factory manual.
Pick yours.

Hey grc,
Thank you for sending these over. I realized they were here after i got the truck going again. I already had the fuel pump tool so i dropped it in place. It didnt sit flush so i turned the motor over by hand until #1 was up and the #1 intake was closed and it dropped down flush. The cam on these trucks are pyramid shaped (3 flat sides) for the pump lifter to ride on. All is well on that job. Unfortunately the oil cooling lines are also weeping a little so ill be getting it back to that job also. But GM has had problems with oil cooling lines for years. Oh and i just gotta say, WTF GM, i ended up using 4 rail pullers to get the rails and injectors out. The rails and injectors were the hardest part other than that the job wasnt bad. Again, thank you for sending them.