Drag radials would probably do it. (If you are having a traction problem now). I know my car always runs faster when it is cold (about 140-160 water temp) Some guys put a bag of ice on the upper intake between runs. A ram air would probably make the difference.
Have you tried bumping the timing up a little?
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67 Fastback - Arctic White Pearl paint
351W 415 hp, Trick Flow Alum. Heads, C-4 Trans, 3.55 gears, Front Disc Brakes, 1-1/8" Fr. 3/4" rear sway bars.
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