So I am looking at some 6.4 valves and am curious about the ex valves being filled with sodium, I see places saying the BGE has sodium and not the SRT and I also find the opposite? Witch one if either is true? Is there a way to tell by looking if they are sodium filled? I also have a bunch of 6.4 heads of both varieties and the intake looks different, is one better than the other?


I am not causing global warming, I am just trying to hold off a impending Ice Age!