1984 gmc sierra What do i need to remove to install this fuel pump

Im restoring my pa paw’s old squarebody i inherited which has been sitting for over 20 years. The fuel tanks were rotted and ive replaced those, but for some reason a few years back i decided to remove the fuel pump thinking there was an issue.

Fast forward to now, im trying to reinstall a fuel pump…. and well I can’t. I’ve got the fuel rod suspended with the bolt trick, i just simply cannot get the damn pump screwed in without making a sealant mess everywhere.

All of the tutorial videos have an insulting amount of workspace for their installs, but im not sure what i should remove to make more room, if anything. Im leary of just pulling things off like the vacuum lines, since thats what got me in this predicament in the first place.

Any suggestions/guidance would be greatly appreciated!