Front suspension, strut inserts. Separate the tie rod end and sway bar
drop link. Support strut on jack. Remove two nuts for upper strut mount.
Lower strut assembly. Remove jack. Compress spring. Remove top nut for
strut insert. Separate mount, dust boot, washer and nut from insert.
Undo cap nut on strut housing (Channellock 460 or larger). Remove
insert. Install new insert. Install dust boot, spring, washer, mount,
cone, washer and nut. Push assembly back under fender lip. Remove spring
compressors. Position assembly to go up into position. Set tie rod end
in place. Use a lever to pry the sway bar down enough to install a nut a
few threads. Put lever under sway bar and lift the assembly into place
noting the proper orientation of the strut mount. Look across at the
other side if you don't remember how it goes. Start the nuts for the
upper mount. Release the lever. Tighten everything up. Install the upper
sway bar link bushings. Brands of shocks that come to mind are: Volvo,
Sachs OEM, Boge OEM, Bilstein, Koni.

Rear suspension. Wagon-Standard shocks or Nivomats. If Nivomat self
leveling ride system then buy springs, Volvo PN 1359710 (wagon, 11.9 mm
wire, spring rate unknown) or 1273977 (sedan with "live" or "straight
axle" 11.3mm wire, spring rate unknown). Use standard shocks, same
brands as above.

If it has the Nivomat rear suspension in a sedan (Multilink independent
rear suspension) about the only thing you can do is find a conventional
rear with the correct ratio gearset and replace it wheel to wheel.

Bob