My Setup for mod at ILR

My basic setup is as follows
Reflex Adjustable Upper Mount set to 2 caster and 0 camber
PN Soft Dark Blue springs
PN Aluminum 0 Degree upper arms
PN Low-down Knuckles, Shims .5mm under, 1.0mm above
0 toe-in (either W+4 or W+6 tie-rod)
1.5 Front Offset, 20mm PN Delrin Rim  and PN RSF15 tire trued to letters and glued sidewalls

Rear
DDS Green top and bottom spring
No preload on either spring for most conditions. Increase preload evenly on both springs for high traction
PN Discs, Carbon Fiber plate wet sanded down to 3000 grit
40wt Shock Oil
PN Silver #4 T-Plate (PN Silver #5 works in high traction conditions)
Ball diff, #1 spacers with holes down
2.0 Rear Offset, 20mm PN Delrin Rim and PN RRR06 tire, RR1106 works too, less lateral traction (aka: side-bite)

Etc.
Audi R8 Body with PN lexan window and PN Adjustable Lexan Wing (458 is okay, less midcorner steering. I don't like the 599xx on this car)
When car starts to understeer, I put the tires back on the truer and take off just enough to expose a new layer of rubber. I find I have to do this every half dozen runs or so.