They are known for their high end stuff.....they have "breathed" on a GTS before turboing it up.....not for me, try DMS instead as they are recognised by BMW and Porsche and they do not void the warranty
Yes, Novitec do a whole raft of after market bits for many cars.
Their black exhaust tips for a Stradale (just the tips, you have to fit them onto your OEM rear boxes) are a snip at a mere £1,250 plus VAT.
I shelved that idea
I've used DMS Automotive before a couple of times. Apparently they can get nearly 350HP and 700NM from the maserati Diesel engine. They also have a rolling road at their offices in Southampton so you can see the improvement as well as feel it when you drive the car.