which dizzy cap?

I'm a fan of brass, though as noted, it doesn't matter much. The brass seems to pit (carbon tracking) less than the aluminum points.
 
It doesn't really matter as long as it has brass parts in it. All the autoparts stores sell 2 levels of cap and rotor, brass and aluminum. The best used to be the Accel cap and rotor, because Accel used to press in the brass, and then machine it in a perfect radius. They have stopped doing that now, and produce their caps in the same fashion as every other manufacturer.

Kurt
 
Last time I tried to change my plugs I pulled the plug wires carefully off each one, except that the plug end metal contacts decided to separate from three of the wires. Luckily I had a set of stock wires as spares so I threw those on instead.