First: for clutch kit go for If I were you I will go for Exedy Extreme Heavy Duty Clutch for about $500-$800 including Flywheel. This also depends on how much power you are aiming at.
In terms of the fuel light not coming on when empty, every car has that light simply to warn you that u are running out of fuel and just take off the cluster if you can and check the bulb. Replace it and it should be fine.
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