XF engines without direct injection

[Bladefist]

Which of the engines found in the Jaguar XF had a multi point injection, instead of direct injection? I know that 4.2 V8 had MPI instead of DI, but anyone knows more on that subject? I am asking because it's a lot cheaper and easier to convert them to LPG.

[V88Dicky]

3.0 V6, 4.2 V8, 4.2 V8 SC.

That's it I think.