Ah...you know not the incredible (lack of) speed with which I work. But I'll keep it in mind if I can't figure out the current stock setup. I'd like the trailing ignition to work...so far all I'm seeing in my price range (beg, steal, or cheap) is replacing the leading ignition. While I might gain some with that, it still leaves my trailing ignition not working.

And I just calculated gas mileage for the last tank of gas after new spark plugs- 24.4 mpg! Of course that's a 12A not a 13B, and nothing done to it, highway speed driving mostly.