Pelican Parts Forums - I need help to choose plug for my engine 2.0l

Hello

i have an engine 911 2.0l T 1969 rebuilt . i have weber 40 idtp carb with cdi box bosch, pertronix ignitor and flame thrower 2.
My engine is rebuilt like original expect pistons, i put 6 Je pistons with more ratio compression 9.5:1 than origin 8:1 but same diameter like origin 80mm.
i live in south of France and the summer, the weather is very hot .

Which plug do i put on this engine 911 2.0 liters 1969 ?

BPR8EVX ?? BPR8EIX ?? BP8ES ?? BPR7EVX ?? BPR7EIX ?? BP7ES ??

THANKS FOR YOUR HELP

Jérômehttp://forums.pelicanparts.com/uploa...1243805290.jpg