71 Dart get 408/ Trick Flow Heads....

I don't want to start an oil debate or get into the credentials or legitimacy of someone but I saw mention of this poster in particular over on Speed-Talk (as well as on many other forums) who supposedly has done extensive testing and research on the subject here and with a quick read seems to make some sense, or is interesting at the least, gotta scroll down a bit to get to the more relevant posts: Don Terrill’s Speed-Talk - Login 540 RAT - Tech Facts, NOT Myths