Same question here!
If I had a real Competizione, I would keep it stock (as stock can be on a highly modified car of course )
on a regular Zag/coupé little improvements (or bigger ones) will be no issue; but not on a Competizione!
But: I presume all the go-faster-stuff is made on the non-original engine, so when the fun is over, he can bring it back 'originali'?!

Let's hope so!

But it's some real eyecandy!