[papajam]

Back in the dark ages, I was wringing a stock 1750 GTV around Lime Rock Park for all it was worth. And there was absolutely NO WAY that this thing would go any faster without more horsepower. Lacking the means to effect a power increase by the afternoon session, I decided to experiment with different turn ins and breaking points. Result? 3 seconds a lap faster. THREE SECONDS!!
The moral here is the single most important thing needed to go faster is to improve the nut behind the wheel.