powdrhound

You don’t wanna run RSR or Cup carriers on a street car. People blindly wanna do this but they don’t understand that the roll centers are all wrong for the ride height and the small diameter tires of a street car. Street GT3 uses 645 tires while Cup and RSR use 680 and 710. Use the 996GT3RS front and rear carriers if using 350/350 brakes or substitute front 997.1GT3 PCCB carriers if using 380/350 brakes. Stock GT3 subframes are fine.

PumpkinRS

Thanks for the responses. Restating my question.

I have the following:

Rear left 997 cup side member
Rear right 997 cup side member
Rear left and Rear right 996 GT3 RS uprights
(steel 996 GT3 caliper bolt spacing not the PCCB spacing)

Front 997 cup subframe
Front pair 996 GT3 RS uprights
(not PCCB spacing)

Is it possible to run above setup?
and if so will standard 996 GT3 wheels (size and offsets) work/fit?
I have read on the forums that 997 gt3 wheels will not fit 996 GT3 (fronts might work, rears will not - is this because of subframe (front and rear) dimensions/stackup?

De Jeeper

Dont u have the standard 6-gt3 subframes? The RS uprights work 100% fine with them so why not just use them and make it easy. Using 7 subframes on a 6 always seam to cause issues.

changster123

If running 996 GT3 RS uprights would you have to buy coilovers that were made for the 997.1 GT3?

Basically would the damper dimensions be different 996 GT3 be 996 GT3 RS?

De Jeeper

No, any coilover designed for the 6-gt3 will work.

philrob1

Youd have to remove the anti roll bar end link brackets

changster123

Yes of course....

I asked because I find at Porsche's specified stock ride height of 128mm in the rear there would be too much spring preload (standard 60mm ID and I think 140mm length mains). I've set mine at 105mm front 120mm rear as a baseline which then the rear preload is reasonable.