EK007 KSS/KTS ENGINE

KSS MK2 1936. HI COULD ANYONE PLEASE ADVISE ME WHAT MODERN SPARK PLUG IS SUITABLE FOR THIS BIKE - Dave Hatch 12/8/2004

I GOT THE ANSWER DIRECTLY FROM NGK UK TECHNICAL SUPPORT - IT IS A NGK B6ES - Dave Hatch 13/8/2004