is it possible to put an 06' 4.6 into a 2000 gt??

 

of course it is.

 

will it fit directly ... what major things would need to be done??

 

not much considering the shortblock is still a 4.6

obviously the heads, intake, all the stuff that comes with it. I'm not sure if you need any kinda adapter plate with the 3v heads.

Someone on here transformed there's into a 3v already

 

full mottor swap or just intake & heads plus odds and ends?

 

the 05+ bottom ends don't just bolt up. They have different motor mount arrangements. You can put the heads and intake on it though... 3V2000gt did it.

 

Didnt PHP come out with motor mount adaptors?