I finally did the grey wire mod. There is a slight improvement in the mid range hit, and I suggest that anyone w/ a 426 do this mod. I waited a while to do this, but would not have hesitated if I knew I would get a bit more punch. Lofting the front wheel is alot easier now as well. My next mod will be a UNI-filter, and I should be done after that. Well, until the next big "secret" is revealed, anyway.