X5 5.0 Power Upgrades

[vandne]

I am soon to finalize my order (no ordering guide yet that I know of) on a 2011 X5, but am looking for some advice:
I always told myself that once the TT from the 335 was available in the X5 I would get that as assumedly some of the mods for that engine would also be available, allowing for almost 400hp. This would give better than 4.8 performance, for a lower price.
That said, I'm quite sure I'm going to go with the 5.0 TT as, well, I like power, and the added luxury. My concern though is that I have yet to find any mods available to give the 5.0 TT similar boosts as what the 3.5TT has. Is anyone aware of mods for this engine?
I would hate to know someone can mod (for relatively little) their 3.5TT to have nearly as much power as the 5.0, when similar mods aren't available for the 5.0.
I would assume it's only a matter of time as there has to be lots of potential in a TT V8, but was hoping someone had something concrete to offer.
Thanks for the help.