he already mentioned the electric superchargerMaybe he means adding a spacer to the TB. There is no "plate" between the intake and heads that I know of
Methinks your friend should read up on how a 4.6 is put together. Next thing you know he'll tell you to add an electric supercharger and some Mustang headers
If you want a power boost, then look into the PI swap, or an Explorer engine.
Then I would recommend reading through the posts here and asking us questions and let your friends say what they want. I'm not out to bash people, but sometimes it's better to let someone speak their peace and move on. Then when you smoke them in a race you can enlighten them as to where you found the real info, lol...he already mentioned the electric supercharger