[Red Mustang Gt 46]

Slow...If I'm not mistaken, Steeda and FRPP wires are made by the same manufacturer (they are just stamped with a brand name). As far as plugs, for your application use the recommended stock plugs...unless your Supercharging.

Basically getting new wires and plugs will smooth out ignition and power curve (less loss of spark in the upper RPM) a tad bit. The stock coils put out alot of volts so the ignition system is pretty efficient (32,000v to 35,000v if I'm not mistaken).