They have double-wishbone suspension both front and rear.
Struts front, shocks rear.
The 1990 Nissan interior panels are held in place with eight retaining clips. Pry outward on each retaining clip to remove the interior door panels.
there is a video on youtube.
at the rear intersection of the T-top bar with the rear cross bar.
Remove the interioer trim and you will find two nuts to remove and the whole window trim and all will come out as you break the seal of the black gooie stuff.
the 1995 XE has four shocks. Two on the rear axle, and one for each independent in the front.
The windshield washer reservoir in a Nissan 300zx is located behind the rear left trunk panel inside the trunk. This is where it is located in my twin turbo anyways.
left rear quarter panel lift the hatch and you will find it
check vacuum lines top passenger side rear of engine
It is located on the center, top, rear of each cylinder head.
underneath the intake plenum near the rear of the engine.