That is all well and good, but you have to remember we are talking about two different animals, a zetec vs. a duratec. We have already found the methods after much trial and error that make duratecs run perfectly well if the tuning is done right. I know I have put the effort into many different systems, YEARS ago and it wasn't until the current system that I have become convinced that this method works and works really well, is affordable, and most importantly is Reapeatable! By that I mean the same thing you said with your zetec kits that it is a consistent setup that you can install on every high power duratec and get it to work well.
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
See My Mods
'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
'06 Mazda5 Touring, 5spd,MTX, Black