NGK or Champion plugs and best wires for a mild 318 auto?

If there is enough clearance in the chamber for the longer electrodes, I highly suggest ZFR5N 3459 NGK's. They cleaned up my idle bigtime and I gained a little in the throttle response and fuel economy department.

Now of course this was in a slant where the factory spec plug electrode sits close to an area of poor combustion, V8 experiences may vary.

And btw, get a nice hot coil (~40,000 volts) and some 8.5mm wires.