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I'm a 960 fanatic. Can you be a little more specific about the brake problems? If I had to guess I would say your brake pedal pulsates in moderate to hard braking. This is a common problem with all 700s and 900s. The solution is to install new brake rotors and carefully measure disk run out when installing. Also torque the lug nuts to 63 foot lb. Don't let the tire guy use an air gun. There is a very good write up about this in the FAQ. I have not used drilled rotors and I would not recommend them. They will not resolve your brake problems and might have a few new ones. Unfortunately I have been reduced to replacing the front rotors almost every years. Its a fact of life with these cars if you do any sort of aggressive driving.
Sways bars depend if you have a sedan or wagon. 93 sedans have independent rear suspension and come equipped from the factory with 24mm front bar 18mm rear. Wagons have 23mm front, 16mm rear. Unfortunately there is nothing to upgrade on the sedan. Whats the fun in that? For the wagon you can install a 24mm front sedan bar if you can find it, and a 19mm rear bar from any number of 700 or 900 wagons. This is the setup I have on the wagon right now but I recently found an IPD 25mm rear bar in a local JY. If you have the money, you can but a sway bar kit from IPD with 25mm front and rear sway bars with poly bushings for the wagon only.
I removed the stock rear springs and self leveling shocks and replaced them with springs from a 740 wagon and conventional gas shocks. This is also a wagon only mod. I didn't like the ride and handling of the Nivomat self leveling shocks. If you go this route you have to replace the shocks and springs as a pair.
92-94 960 wagon has cast iron front control arms. Some 700s and 900s however were equipped with aluminum control arms. I found some at the JY but I have not installed them yet. I think this might yield a more compliant ride and better road feel but that's just a theory. Well worth trying out anyway. Aluminum control arms use a different kind of sway bar end link so be sure to also take that part along with the control arm. If you go to the trouble to replace the control arms, also install Polyurethane Strut Rod Bushings. The stock rubber bushings are a poor design and lead to steering wheel vibrations. There isn't a particular year or model that has aluminum. Take a look at all the 700s and 900s in the yard and you'll get an idea of how to identify the part. If in doubt use a small magnet to identify the control arm through the grime (iron with stick, aluminum will not). If you don't have a magnet handy use a stereo speaker.
Pictured below is an aluminum control arm. The end link on the aluminum control arm use 4 identical bushings. Iron control arm end links have 2 bushings at the top, and one vertical bushings at the bottom.
If you would like to discuss this further: jtantare@gmail.com
Good luck.
Justin
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