I have been running lately a tc02c with geardif (gearbox made by Clive) and T4 rear arms (makers it +\- 6 mm longer) at Kampenhout (astro turf, high grip and a lot of turns!) and it jumps smoother and more level than a normal tc02c and it easier and more consistent to drive with as result quicker at 5 minutes. So my feeling is the evo will be better, so that is why is already pre ordered mine. (Mind you I also have a tm2 which is also a dream to drive...).
On the new evo I will also put the front camber link extensies plates and rear anti squat and toe in plate made by Clive which will even make the car even better