Basically to do direct fuel injection into the cylinder you would need to redesign the heads, replace the low pressure manifold injection system with a high pressure direct injection system, design a new computer and completely new programming to control the injectors just to name a few changes that must happen to make the system feasible in our vehicles. It would be many dollars and trial and error engineering just to get the engine to fire while using all of the other components. Not cheap but if you have mucho dinero to spend we will cheer from the bleachers.
Stalag;___________Just for Rizzo I am posting this in my sig. Coolants
2001 Lincoln Town Car Cartier L, 1997 Mercury Grand Marquis (extinct)
On my LTC the following mods/upgrades were added. Heinous motorsport control arms, Command Automotive SD-1 rotors, Calipers by Goldlinebrakes.com in silver with Hawk HPS pads, MSD COP's. MZT is also applied with programming from BOC. j-mod is now done. Final rebuild of transmission done by Gearstar.