[porkkis]

I'm bumping this old thread for some questions. First of all big thank you to all of you. Perelet brilliantly archived the thread and many others have given so much valuable input. This thread cleared up so many puzzling things and pretty much everything is clear now. Almost.

I have a 1992 964 C2 NB ROW car and I'm going to get the factory 993RS uprights / hub carriers now even if they are crazy money these days. I'm going to stick with the original 964 subframe longitudinals because I don't want to add track width. That would cause tire fitment issues.
I did read the uprights actually take few mm out of the track width compared to the 964 units. This can be compensated easily with some spacer plates without messing up the Ackermann I guess.

The actual question is: Can I use RSR/GT2 track rods / tie rods without using 993 longitudinals? I'd rather not modify them in any way. Does the adjustment range cover the needs when using 964 longitudinals? The GT2 versions without any rubber are currently available with part number 993 347 031 82.
Camber adjustability is another potential issue. I'm probably going for the Rennline weather proof top camber plates. Am I going to have a problem here or can anyone guess or state as a fact how much negative camber can I get?
I have not been able to find out if 964 and 993 strut top mounting points in body are equally wide or is 993 wider.

Btw I find it quite interesting that everyone is just talking about bump steer and that the uprights address the obvious problem with the original geometry. No one talks about "bump camber" or camber gain. The RS upright bring the ball joint down considerably and this is very good thing in a MacPherson system.

With my current ride height of about 120mm (clearance of the outermost subframe bolt head to ground) the lower control arms are already facing slightly upwards towards their outer end. This means any suspension travel will decrease negative camber. In a scenario like this a lot of static negative camber would be needed to get the tire somewhat perpendicular with the surface when cornering in race track conditions. After all perpendicular is what we are after. Optimally all the time. Excessive neg camber is also bad for braking and tire wear.
The problem can be of course also be addressed to some extent with adding caster which adds camber to a turned wheel.

Btw I was going for the BBI uprights but there is currently lead time of 2-3 months for them.