Should i buy the msd coil and ditributor cap and rotor along with some new spark plugs for my car before buying headers? I understand it is my choice, but i have stock electronics with my nitrous kit and I'm not sure when the plugs were last changed. I bought the car recently like it was. So I'm wondering if I will see a improvement in throttle response with new plugs and coil and cap and rotor? Ialready have msd wires. Also i kno to go a stage cooler wth plugs because of my nitrous, but does that take away performance when im not spraying?

do the headers first . then decide how to route wires and where to put wire looms . worked for me . i custom made my own 8.5 m.s.d. wires . take your time and do it right with good crimpers .