Here's my setup for carpet..
TRF Short White springs
TRF Shocks, 80 wt oil, 2-hole pistons, 2 o-rings, no rebound
S-Grips, moulded insert (hard to find), 1/3 traction compound on inside
Short Fluorescent Red springs
TRF Shocks, 60 wt oil, 2-hole pistons, 3 o-rings, no rebound
Type A's, firm foam insert strip, full traction compound
5-6mm ride height all around
It's a very stiff setup in the front, and runs like a touring car.. no body roll for quick transitions, and at the same time I can run through the whole track full-throttle without flipping. If you need more steering, widen the strip of compound in the front.
Get the 2-degree rear uprights if you can, or just upgrade to the lightweight "M03M" set, it has 2 degrees already, and is very nimble.
Put the receiver and speedo on the sides like saddlebags, keeps the COG way low.
I use the alfa body for TCS, and the HPI Miata for the other races.. love the rear wing..
That's the basis of the setup, the rest is optional.. aluminum hexes, rear universals, carbon gearshafts, TA03 Ball Diff w/ lightweight plates, aluminum screws with a few Ti in spots, but it's not that necessary.
It won our last big Mini race, so it can't be too bad of a setup..