Re: neutral safety switch
I'm not familiar with the factory clutch pedal safety switches. Are they designed to pass current directly to the solenoid or provide a voltage or ground to trigger a relay, through which the current goes from the ignition switch to the solenoid? The way you describe it will work but make sure the clutch pedal switch can handle the current. If the clutch pedal switch isn't robust enough I'd use a relay.
64 Skylark Convertible
462 w/ Stage 2 heads, TA 212 cam, B4B intake
3.73 12 Bolt w/ TruTrac and Moser axles