Porsche 996 GT3 RS
Looking at the RUF RGT it seems that this could be the perfect basis for a 996 GT3 RS replica, since the RGT was derived from the GT3 after all and was a kind of a precurser for the later 996 GT3 RS.
I made three configurations for such an asumed 996 GT3 RS based on real suspension data.
The weight of 1330kg fits perfectly for an 996 GT3 RS (20kg less than the normal 996 GT3)
All we need to fit additionally is
-plain white body paint
-Prodrive rims painted red or blue
-fully adjustable LSD
-fully adjustable suspension
-"GT3 RS"-decals in red or blue for the car body on the sides...
Engine: With an oil service the RUF RGT will end up with about 400 HP with a new build engine.
Officially the 996 GT3 RS had the same HP figure as the GT3 (280kW/380HP) but on the dyna most of the RS engines turned out to have round about 400HP.
So it's up to you how much hoursepower you want to spend your 996 RS replica, however, in reality the original RGT power figure is quite equal to the GT RS, even though Porsche never claimed that
1. Original GT3 (RS) street setup:
height: 0/0
spring: 5.0/10.5 *)
damp ext: 6/6
damp com: 4/4
roll: 6/6 **)
cam:1.0/1.5
toe: +0.08/+0.26
LSD: 10/40/60
*) Original spring rates: 35N/65N for the GT3 Mk.1, 40N/95N for the GT3 Mk.2 and 45N/95N for the GT3 RS
In GT5 the front spring rates can only be 5.0 kgf/mm as minimum for the RUF - so the RS figures could be replicated with 45N=4.6kgf (≈5.0kgf) and 95N=9.7kgf, or if you want to keep the original ratio between front and back: 5.0 kgf/mm and 10.5 kgf/mm.
**) Original GT3 (RS) manufacture setup was "one notch below maximum hard" for both
Hence: For the dampers I took a typical default start-setup how it is used in real 996 track cars for bumpy tracks like Nordschleife; usually the driver evolves such a start-setup to what he feels is the best for the specific track he drives
2. Modified setup for street and track but still based on the original spring rates:
height: 0/0
spring: 5.0/10.5
damp ext: 6/6
damp com: 4/4
roll: 4/6
cam:2.8/2.5
toe: +0.07/+0.35
LSD: 10/40/60
This is actually a real setup of a street legal 996 GT3 RS for track purposes and was taken from a german Porsche forum
3. Track setup based on setup 2 and additional aftermarket springs with authentic spring rates:
height: -10/-10
spring: 7.0/11.0 (or 8.0/12.0)
damp ext: 6/6
damp com: 4/4
roll: 6/4 *)
cam:2.8/2.5
toe: +0.07/+0.35
LSD: 10/40/60
*) softer on front because I didn't like the massiv oversteering - change as desired
To keep it realistic, don't go beyond sports soft tires.