You got it all wrong.
First..
What you dont mention is "octane" you'll be running. meaning if you think you can run 600 WHP then throw some juice on it.. there better be great gas in it. Not junk 93 but 110-116.
Second..
You say 600 WHP. That will happen at X amount of boost. Lets say 28 PSI. Why not get an electronic boost controller and turn the boost down to 18. Now it runs around at 450 to the wheels. You want 600.. push a button.. your back at 28 and can get your number.
Third..
Octane is the limiter. Most do the meth so they can drive around on 93 and when the motor goes up on boost can spray the meth to stop the detonation. On a track only car, why would you use methanol when 110/116/121 octane fuel can be used for the one hit wonders.
Dont think you can run 30 PSI, high timing, make big power and do it on 87 octane. Aint gonna happen.
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NEW Machine
89 Mustang GT
9.040 at 153.13 1.502 60ft Hoosiers 275/60 Jan 2012
True-Street trim
348, 88 t4 .96, pump gas
www.alkycontrol.com