HELP Toytec/Deaver Progressive AAL Install

Have half my truck apart in the AutoZone parking lot and don’t know which side goes forward. They aren’t symmetrical front/back.

 

Figured that part out, now how the hell to tighten center pin?

 

Did you/are you clamping add a leaf to spring pack? Why in Autozone parking lot?, curious.

 

Rear lift installed successfully. Passenger side took about 3.5 hours between messing with getting the center pin in, driver only took an hour to do. I live in an apartment and it’s against the property’s rules to work on the vehicle in the lot, and besides, if I need something (I needed a deep 7/8” socket and an adapter for it in this case) then AutoZone probably has it or one I can borrow.