Some good points made.
I just won a 12 hour endurance with an MR02 on a Kyosho track.
my team ran one car between us non stop not one single problem, motor was still pulling after 12 hours continuos use.
the car comes with bushes as standard.
I used all genuine kyosho bearings and hop ups maybe not the cheapest but in my opnion the best.
Fully Ball raced.
Ball diff
Carbon H plate
Alu 2 degree uprights
x speed motor.
Kyosho radial tyres.
hope links work!!!
http://www.youtube.com/watch?v=xCkRSJEx_rM