"MORE" not always better.
800 horsepower is "Double" the stock horspower rating of a Testarossa. Count on "BLOWING UP!!!" the transmission, the clutch the drive shafts, etc, etc.....I have a modifyed 1991 Testarossa that has 445 hp. Various members on this forum have been taken for a ride, all without exception have been very impressed. No real need for 800hp, unless of course you want to end up wrapped around a TREE!!!.....Mark.