S14 chassis with S14 SR20. No power steering, no HVAC, no interior except for seats, dash, center console, door panels, harness bar, and bare minimum wire harness. With full fluids, it weighs in at 2370. Really, there isn't a whole lot more weight to pull out of it without getting Kognition-extreme.
And I agree with anyone that supports minimizing weight. Your car is going to handle better everywhere on the track if you shed some pounds. Of course, increasing engine output will make for quicker acceleration too (assuming you have enough grip to transmit the power to the road). There's a reason why power/weight ratio is one of the most important performance comparison factors.
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