What's the voltage of a stock 1988 350 coil ? Thank you !

 

I'm new here. and I was just wondering if the MSD 40.000 Volt coil I put on the engine along with a set of AC Delco Professional plug wires and a MSD Cap and rotor.and the installation of AC Delco #1 Platinum 'Rapid-fire' plugs are safe ? The only difference is the gab, the #1 Platinum plugs is 0.45 and the stock AC Delco CR43TS is 0.35 ? The AC Delco #1 Platinum Rapid-Fire ' are listed along with the AC CR43TS as available as listed for my particular 5.7 liter engine. side by side, both plugs are identical same thread and electroes are likewise the same. Anyone know of this combination ?

Thank you !