Iridium spark plugs

Wanting info about iridium spark plugs for a 73 Commando 750, I think I can use NGK BP7EIX, I understand that if I use the resistor type I wood need copper leads (Cables) and non resistor caps. Running Voya elctronics etc. Which way would be best for me to go ?? I have found Denso W22EP-U the best so far but would like to try the iridiums...... Any help would be gratefully excepted thankyou...

Clarky

Most modern spiral wound silicon leads are are also un-suppressed, using a set with a Boyer and Iridiums and they are fine.

Thanks for that, the leads are Bosch (super sports inductive core 881) should be ok

If you like Denso plugs why not use Denso IW22s, they are the equivalent to NGK BP7EIX.

I use IW27s in a race 750 Short Stroke with a Boyer, and in a Yamaha single, I am content with them, but they would be too cool for your road bike.

NGK make a good plug, but those using Densos seem a little more content with them these days, and there seems to be fewer fake ones around, which has become a problem with NGK, though avoiding ebay may help there.