69 deville steering gearbox question

I'm installing a steering gearbox in 69 deville. Which side of the gear box does the high pressure line connect to? Drivers side or pass. side.

The low pressure line goes to the cooler then back to the pump and has hose clamp on it the high press. line is a manufactured line.

???

BTW, this steering gearbox is the same for a long time so if anyone out there can check their 1970's caddi I'd appreciate it.

Aren't the fittings 2 different sizes the pressure being larger?