u/Flashycore3430

So I own a Royal Enfield Meteor 350. I recently purchased a NGK Iridium Max Spark Plug, model LKR7BIX-P. Now I need a spark plug cap for it that is compatible with both the meteor and the spark plug. Please can anyone help me as to what cap I should get? And also I've seen there are resistance caps and non resistance caps, which one do I need? Please do advise and thank you.