315's with slicks are definitely plenty. Think about how much more weight I have then you back there with the leaf springs, Fays 2 watts (35 lbs) and I cant get the rear to slide (with the Sutton secret sauce shocks).
295's up front if you can manage would be great also but Dave Brown and Karl Chicca have been doing pretty darn well with 275's and I imagine they're shock set up contributes to that.
335 in the rear with 200 tread wear tires I completely understand due to the amount of power these Optima Challenge cars lay down but I'm under the impression that this will be your track car and not auto x.
And again, why spend money on a custom tank when you can pic up a fuel cell. Aluminum fuel cell would be my preference as my 8 gallon steel is 26 lbs and I'm pretty sure you will go bigger.
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Gaetano Cosentino
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