I probably ought to take a pass on them.. If it was my car for the price I'd give it a shot.. my foots always in it... But we know what "under driving" a car can do where carbon is concerned ..

" When the heat range is too cold for the engine speed, the firing end temperature will stay below 450°C and carbon deposits will accumulate on the insulator nose. "

Thanks for the great price and chance at them though!