K&N panel filter, don't go down the cone route, you need the resonator box for maximum torque
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(which is reasonably high on this engine)
Run it on Optimax and advance the timing to suit.
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Don't fit any accessories or carry passengers, if you've got a spoiler lose it, adds weight and drag that you can't afford.
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Go out and play with the gear ranges, you may find that changing at around 5750 mark gives best performance, power tails off to 6300 quite quickly.
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It's never going to be a traffic light GP car, but once rolling you can get these to move quite nicely, should keep a GE in it's sights on a country road.
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