Personally its a waste of a Mercedes motor to swap any of them into a xf... as tight as it is in the engine compartment already, im dying to know how you change your 16 spark plugs? In my area it would cost $100 or more just for the plugs.

For those that are interested however:
v6 - m112
v6 super charged - m112k
v8 - m113
v8 super charged - m113k

slk230/slk320 - v6
slk32 - v6 sc or SRT6

there are many sources of the m113 v8 in Mercedes applications (I think E class, not certain) and I believe there are about four different displacements as well, but of top of head I think its 3.8 4.4 5.0 and 5.5

I don’t know if any of those can be found supercharged other than the 5.5 (or if you can supercharge them)

If you are looking to do something overkill like put an AMG motor in your lil ol XF, then thats your motor, m113k. See amx’s photos above ☝🏼😁

And also, i see it as a waste of a XF too, our cars are already considered vintage, so instead of trying to overkill it and crush every 2 door v8 in the vicinity, I decided to go the ‘restoration’ route, and make it the luxury roadster it’s designed to be, or “autobahnable” is what i call it😂😂