Up to you really,i just fitted a fuel gauge with zx9 clocks.
Use the zx9 loom and just extend as required.Use 10 core trailer wire to get to the rear end of the car and just splice into the loom under the scuttle.This will make life much easier to connect the speedo sensor etc up.U could also mount the zx9 switch gear on stalks behind the steering wheel.
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