Hey Gents, understand this thread is not mine and a bit cold but the subject is relevant to my question,
My build seems very similar to "Coupe66's" and I also am on the hunt for alternative plugs, My AFR spec sheet suggests Autolite #3924 which have a multitude of NGK Comparatives, BKR6E-11 BKR5EVX (platinum) BKR5EIX (Iridium) Now the Iridium plugs are about 4 times the price, but last alot longer, ( which is good for the guys with big hands and small patience) But for the average cruiser are they worth the expense, As always keen for anyones thoughts.., Andrew.