spark plugs

I have a 79 cb750 Limited. I'm replacing both ignition coils (one is faulty), the cables, and upgrading to iridium spark plugs. From NGK D8EA to NGK DR8EIX My question is this: Should I gap these plugs, do I need to? I'm in a toss up. The clymer that came with my bike has specifications for...

Alright guys, I'm new here and excited to get put to work with all your solutions. I recently bought a bike, my first, a 79' CB750L. It needed a carb rebuild, which was a pain. I rebuilt the carb, replaced the air cutoff diaphragms and float bowl gaskets as well as the jets. I'm not sure the new...

I know I could email Pete directly, but I know he's on here and sharing his suggestion would be beneficial to many. So my Pamco Ultimate Ignition system is in the mail. Wondering what is the suggested spark plug for this system? By the way, I'm budget minded and love how his suggested...