Planning first engine build, need help

What's a streetfire plug? Streetfire is MSD's name brand. I see all kinda things but plugs with that name. What plugs do you have?

Msd Part no:32749. Super conductor wires. my bad i remembered the wrong name. I had to cut and fit them, engine ran fine and i had no issues with missfires after installation but i still have the original plug wires if you think thats the issue.