Which is the best setup for grip??

[Apolan]

I think you should tune your car acordingly to your skill and purpuse. If you're saying that you're a very good race car driver and you want the car only to do well on track, than you will need a completely different aproach than say if you want a street car that will be fast on street/mountain roads, maybe occasional track use, but still maintain good streetability. And if you are a beginner like me, i would suggest that you do not overtune your car, just do the basic mods to make the car more comfortable to push hard (renew the poor old hachiroku, get a good seat&steering wheel, better brake pads, make the engine good and healthy and good wheel alignment). I believe that would enable a beginner to progress much faster than if he was to go all out with superstiff springs/coilovers/othermods.. not even knowing what each mod does. i believe in modding your car when you know exactly why you need it.. So i would get the basics and go racing and than go from there. But if you're a pro than this is on a whole another level - but i think the same story of succesfull racing.