What diff do I use in my s14
 

What diff do you suggest for a s14 with 2jzgte vvti with big single and cd009 trans. Will be used for drag n street runs. Has 600+whp. Would like to be in 4th in the traps. Would you suggest 350z, j30, q45. Motor and everything is in car but I have not taken it to the track yet. Would like to swap diff first to the correct one. Please help me if possible.

Check out the D3 "white rice" 240sx

I'm looking into an early q45 but man they are hard to find.

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White rice is an auto car. I clearly stated I am 6spd

You calculate the max speed in the final race gear with the given tire (use an online calculator) to find what gear ratio is best,

then choose the one close, erring to whichever side you think youll need a bit more.

Thanks. Any site suggestions