CRC T-Fource - does it come with two chassis? one regular and one stiff? or just stiff?
The team kit comes with the thick chassis. The standard kit comes with the standard chassis with machined lightening holes/windows.
The team red kit comes with dual red aluminum lowered pods, racing tires in the kit, all red alum hardware, red alum tubes, titanium tie rods, thick chassis, full ball bearing, large "D" ring diff.
I think the standard car comes with a .085" chassis, green front and rear tires, aluminum left motor plate with left side in glass filled nylon, dual alum tubes.
Regarding asphalt tire choice... most prefer purple front and pink rears. For more steering some use magenta fronts. Plaid fronts work well too.
On high bite carpet, I like black front a grey rear. If the carpet is dirty or very loose, then Grey front and pink rear.