This is my first B1 headed combo and very first nitrous application. I have used Autolite plugs in all my builds for the past 44 years but NGK seems to be the go to plug with nitrous. Brad Watt was gracious enough to get me pointed in the right direction but before I order several boxes I would like to pick other B1 guys brain. I want to start out NA and then slowly apply the juice after a week or two so I need a NA and nitrous NGK plug number. Thanks guys. Its a 200-650 plate system

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time