The gap on electronic ignition plugs is usually between 45 and 60 thousandths, depending on the voltage of the coil. The higher the voltage, the larger the gap. However, Pertronix recommends you try .005 more than the standard gap.
Pertronix webpage "What should I gap the spark plugs to?
The Ignitor has no set specification in which the spark plugs should be gaped at. Every engine responds differently to spark plug setting. In most cases increasing the factory recommended gap by .005 improves the engine performance."