Try this:

Front:

.020 Spring, no damping
10deg Reactive caster.
4 deg static caster
1.5 deg neg. camber
No link between the Left and Right front suspension
Servo Angled with ball studs in middle holes on Kimbrough servo saver.
1.80" Double Pink front tires
Sauce 1/2 inner with Paragon FXII for 15 min then resauce with Trinity Tire Tweak for an additional 15 min.

Rear:
.68 T-Bar using only the two outer holes
Remove side springs and use conventional tweak screws
30wt oil in center damper, green spring (try 25wt if the track is bumpy)
Trinity white grease in the side damper tubes
1.90" Pink rear tires
Sauce whole tire with Paragon FXII for 15 min then resauce with Trinity Tire Tweak for an additional 15 min.

The ride height will be ~4mm but I race it down to 3mm for ideal performance. With this setup you car will not slide much so tire wear is really good.

An 8 Turn on asphalt is kinda nutty unless you are running at a tiny track that is all 180's. Most Mod guys run a 9 or 10 outside. I would try 24/100 with 1.9 rear tires and an 8 turn. If you get a 9 or 10 run 25/100. These gear ratios are pretty standard. Its pretty much up to your finger whether you dump or not...lol!