The best suspension upgrade for cornering?

Ok About my car(s). One is an in progress race car that I'm building for the class I mentioned above, A somewhat long term project.. The other is a stock 72 Duster that is my commuter and "rolling test bed" for my ideas. I need advice for both.

Some questions

And TIRES like 68Cuda said. 17" because you can't get good 15" tires anymore. And if you ever what big brakes they will fit. And got at least 8" wide rim. Preferably 17x9 with 275/40/17 ALL the way around. Some body styles won't allow that. Head towards 17x8or9 Mustang rims/tires on Craiglist/Ebay.

If you can afford that just run some 15x7 cop rims and some 225/60/15 tires with a high speed rating. That's what I did.

That's what I'm planning to do, 15's them move to 17's (on my street Duster). But on the other one the rules limit me to 15's.

You can even scratch shocks from that list that are over $40/ea from that list in terms of importance and amount of difference.

So get cheap shocks first? Does it not matter that much? Stock replacement? or something like KYB Gas-a just?

Then go out and get your feet wet.

That's the plan!

Then add front and rear sway bar with an adjustable rear sway. Then get some rear springs. Some stock height 340 or one size firmer (~160lbs/in) same size on both sides. If you want something better then Hotchkis rear leaf. Then add some better shocks and expensive shocks like bilstein/koni/QA1.

Do you have any pictures of an adjustable rear-swaybar? I would love to see pics and how they mount. What about torsion bars? Do you need to stiffen up the front or do you rely on the swaybars for roll stiffness and runs the soft rates for max mechanical grip? Do you have any problems with wheel hop with the stock springs? Where is a good place to get springs?

Stock disk or 11.75 upgrade stock disks are fine for autocross. If you want to do much time on a road course you'll proabably want to upgrade to 13" disks with a ARengineering brembo setup or Willwood 6 piston type.

I'm going to the 11.75 discs on the street car Later to be upgraded to 13's). but the rules say that I have to have the stock rotor dia and width. So I'm not sure what I'll do to increase braking performance..