I also meant to ask what is the best plug to use for non turbo buttons? I would like to stick to OS. At the moment my mate uses the OS #8 plugs. I have been using McCoy MC-9's and would like to switch to OS.

I know you guys recommend the OS P3 for turbo, but I have the standard button head, I want to keep that as everyone else I race / bash with uses normal plugs, so if I run out, I know that someone else will have a spare.

Thanks again