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I suspect:
First, good corner ballance and allianment helps in braking. If the suspention is preloaded, then under a high G stop, one or two wheels may lock up faster.
In a corner, good weight ballance, icluding provision for the drivers weight, should make the car's dynamics in the corners closer to the same side to side. Compaired to being say being tail happy turning left, and not so much turning right.
Alignment effects how the car tracks at speed and how quick it wants to turn (toe in/out, front & rear). Also, effects how well the tire contacts the road surface (camber) in a corner and under braking (trading one off for the other).
I suspect the alignment and corner ballance needs to be done togeather as they effect each other and it is a rare shop that is able to do so on a 911, and few that are good at it.
For example, adding neg camber lowers the car, especially in the back. So if you took it for a corner ballance, and then take it for an alignment, your ballance will be off. And vise-versa.
Having adjustable rear spring plates and adjustable sway bar drop links is very helpfull.
I wonder aboutthe front sway bar's influance on a 3.2 Carrera. The way it is installed, it is difficult to get this out of the equation to the point that using a tripod method may not even come close. I have not checked yet but I hope we can loosen it up on the main body of the sway bar. Then we migh get close.
I have used what I will call the tripod method on a couple of cars by jacking the car up under the motor for the front, and under the center of the front, for the rear. When doing, the sway bars must be disconected.
I tested the effect of my siting in the car on my stock suspention 85 Carrera.
The driver side droped 10/16's and the passager dropped 5/16's.
The sway bars can transfer a lot of load from one side to the other. I suspect if the sways were not hooked up, the differance would have been more significant.
I would try for a 1/2" differance for a 200-230 lb driver on a stock Carrer w/o sway hooked up. 1/4" with 22/29 or 22/28's which are about 100% stiffer, not counting the sway bars.
This is so the car is balanced with the driver in it.
My car is up on jack stands as I wright this so I have been thinkin a bunch about it.
Just my $.02...
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