Get the c4. You dont seem to be too concerned with daily driving if you are pushing 500. People put gobs of power in front of those c4s and if built right they handle it.
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89 notch-finally not stock!! ported gt40's, ported cobra intake, 65mm tb, 75mm maf, mac cai, lt's,prochamber, fms 1.6 rr, 125 shot.
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